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	<title>Playing with Light</title>
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	<link>http://clemsonphotoclub.com/wordpress</link>
	<description>The photography education blog of the Clemson Photo Club</description>
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		<title>What kind of camera should I buy?</title>
		<link>http://clemsonphotoclub.com/wordpress/?p=119</link>
		<comments>http://clemsonphotoclub.com/wordpress/?p=119#comments</comments>
		<pubDate>Wed, 10 Aug 2011 01:52:39 +0000</pubDate>
		<dc:creator>Del Kimbler</dc:creator>
				<category><![CDATA[Equipment]]></category>
		<category><![CDATA[Canon]]></category>
		<category><![CDATA[Coolpix]]></category>
		<category><![CDATA[Digital camera]]></category>
		<category><![CDATA[Dpreview.com]]></category>
		<category><![CDATA[Nikon]]></category>
		<category><![CDATA[Panasonic]]></category>
		<category><![CDATA[travel camera]]></category>
		<category><![CDATA[travel zooms]]></category>
		<category><![CDATA[Wide-angle lens]]></category>
		<category><![CDATA[Zoom lens]]></category>

		<guid isPermaLink="false">http://clemsonphotoclub.com/wordpress/?p=119</guid>
		<description><![CDATA[<p>This is a question I hear from time to time, usually from  a parent about to buy a camera for a young photographer or from an artist using photography to document subjects or document artworks.  If the question is from someone who wants to learn photography as a hobby, it is difficult to answer.  <span style="color:#777"> . . . &#8594; Read More: <a href="http://clemsonphotoclub.com/wordpress/?p=119">What kind of camera should I buy?</a></span>]]></description>
			<content:encoded><![CDATA[<p>This is a question I hear from time to time, usually from  a parent about to buy a camera for a young photographer or from an artist using photography to document subjects or document artworks.  If the question is from someone who wants to learn photography as a hobby, it is difficult to answer.  But for a specific set of uses, where the photographer will rely on the camera&#8217;s creative and program modes, and the emphasis is on availability, the answer is much easier than it once was.</p>
<p>Dpreview.com is probably the premier photography equipment review site in the world.  Something they have begun doing in the past year or so is to review cameras in groups, and a recent group is the travel camera.  While cameras in this group should have pretty good image quality, they must be very portable.  They should be easy enough to carry that they WILL be carried, not left home, and they should have a zoom range that covers the vast majority of subjects.  So, these cameras are compact and have a large zoom range.</p>
<p>In looking over the dpreview.com review from this past July, <a title="dpreview.com travel zooms" href="http://www.dpreview.com/reviews/q311travelzoomgrouptest/" target="_blank">here</a>, I have found two cameras that I especially like, primarily for their wide angle end.  These are the Panasonic Lumix DMC-ZS10 and Nikon Coolpix S9100.  They have good user interfaces, zoom back as wide as 24mm (in 35mm equivalent terms), have built-in anti-shake technology, and have good image quality.  And, they are small and easy to carry.  A lens setting of 24mm means it is wide enough to be useful in landscapes and streetscapes.  Others in this group might zoom farther, but are less useful where a wide angle is required.</p>
<p>In addition to these, I like the Panasonic DMC-LX5, which suffers by comparison only in not zooming as far (so it is not a travel zoom, but a compact zoom).  You can find it <a title="enthusiast compact group" href="http://www.dpreview.com/reviews/q42010highendcompactgroup/" target="_blank">here</a>, with the Canon S95 and Nikon Coolpix P7000.  The LX5 zoom does not go as far, but it is still an excellent choice if you are willing to give up a little magnification.  Read the reviews for these three.  Read the reviews for others as well, if you like, using your judgment rather than mine.  But I really like this Panasonic and the two travel zooms.</p>
<p>One other choice if your recreation runs to hiking, camping, kayaking and the like, is one of the Olympus Tough series of cameras.  These are waterproof to 33 ft. and will survive a drop from six ft.  And still have good image quality and ease of use.  Waterproof and shockproof are things that become more important than other characteristics in an environment that is tough on cameras.</p>
<p>These choices might change next year.  The camera manufacturers are constantly innovating, in marketing and sometimes in useful features.  So, do your homework and read the reviews.  But if you want a short list as a start and you want a compact camera that is easy to carry and will get almost every distance shot you encounter, one of the travel zooms is your best bet.</p>
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		<title>What about white balance?</title>
		<link>http://clemsonphotoclub.com/wordpress/?p=108</link>
		<comments>http://clemsonphotoclub.com/wordpress/?p=108#comments</comments>
		<pubDate>Sat, 14 May 2011 20:13:37 +0000</pubDate>
		<dc:creator>Del Kimbler</dc:creator>
				<category><![CDATA[Equipment]]></category>
		<category><![CDATA[Light]]></category>
		<category><![CDATA[Technique]]></category>
		<category><![CDATA[camera manual]]></category>
		<category><![CDATA[candle flame]]></category>
		<category><![CDATA[characteristic colors]]></category>
		<category><![CDATA[color tones]]></category>
		<category><![CDATA[correction filter]]></category>
		<category><![CDATA[creative control]]></category>
		<category><![CDATA[creativity]]></category>
		<category><![CDATA[high noon]]></category>
		<category><![CDATA[kelvin]]></category>
		<category><![CDATA[lighting]]></category>
		<category><![CDATA[tungsten]]></category>
		<category><![CDATA[white balance]]></category>

		<guid isPermaLink="false">http://clemsonphotoclub.com/wordpress/?p=108</guid>
		<description><![CDATA[ <p>When we all used film, we had to be concerned with white balance, but we dealt with it in more clumsy ways than today with digital cameras.  We bought daylight film or indoor film, or else we used filters to “color correct” based on the difference between the light we had and the <span style="color:#777"> . . . &#8594; Read More: <a href="http://clemsonphotoclub.com/wordpress/?p=108">What about white balance?</a></span>]]></description>
			<content:encoded><![CDATA[<div>
<p>When we all used film, we had to  be concerned with white balance, but we dealt with it in more clumsy  ways than today with digital cameras.  We bought daylight film or indoor film, or else we used filters  to “color correct” based on the difference between the light we had and  the light our film was made for.  Most people just bought the kind of  film they needed the most and put up with the side effects.</p>
<p>And what did we get?  Well, when we had daylight film and used it  indoors with tungsten lighting (typical bulbs in light fixtures), we got  a color cast.  This color cast could be at least partly remedied by  using flash.  How could that be?  It worked when the flash could overpower ambient light because flash and cloudy sunlight have similar colors.  But if we had indoor (tungsten) film  and used it outdoors, we were sunk unless we had the right color  correction filter.</p>
<p>And what do we do now?  Most of us set the white balance control to  Auto on our digital cameras, and rely on it to do its best.  And many of  them do very well.  But another approach is to treat the white balance  as another creative control, and set it to get the effect we desire.  To  do this, we need to understand a little bit about the color of light.</p>
<p>We dealt with this issue before, in the tutorial on light color and  correction.  From that we can recall that visible light can range from a  sort of blueish light in the sun at high noon (say, 8000 Kelvin) with  increases going to violet and UV, to an orange light from a candle flame  (say, 1000 Kelvin) with decreases going to red and IR.  A cloudy bright  day might be in the neighborhood of 5000 Kelvin, as is the light from  an unmodified flash.  Other kinds of light (say, fluorescents or sodium  vapor) have their characteristic colors.  So if we want our photos to  look natural, meaning as they would when seen in that light, we can set  the white balance to match. Using auto white balance works in most  cases, but it has limits; if it is important to get the color tones  right, set the white balance manually to a preset or use a custom white  balance.  (See your camera manual for how to do a custom white balance.)</p>
<p>But the point here is not just how to make the color cast go away,  but how to make color “correction” part of your technique.  Here is a  photo with its white balance set “incorrectly”.  Is the white balance  wrong?  Not if I meant to set it that way, it is just inconsistent with  the light.  And the result is a view of the scene that you would not see  if you were there.  Is it a bad photograph?  That depends on our point  of view and what we like and don’t like.</p>
<p style="text-align: center;"><a href="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2011/05/IMG_3099.jpg"><img class="aligncenter size-full wp-image-114" title="IMG_3099" src="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2011/05/IMG_3099.jpg" alt="" width="717" height="538" /></a></p>
<p>Here is another with the “wrong” white balance.  How wrong is this?  I  find it “more wrong” because of the setting and how I expect the colors  to look.   To me, colors in nature can easily look wrong, and need to  be managed carefully.  Colors on a street scene, though, might be almost  anything, and unless we are very familiar with the scene we might  accept heavy modification to the color.</p>
<p style="text-align: center;"><a href="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2011/05/WBSet1a.jpg"><img class="aligncenter size-full wp-image-115" title="WBSet1a" src="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2011/05/WBSet1a.jpg" alt="" width="717" height="538" /></a></p>
<p>Some cameras have a “raw” shooting mode.  In this mode, the  relatively unmodified photo file is saved, along with information about  it.  This lets us change the white balance using photo editing software  that supports raw mode; this way, we get can defer the choice of color  cast until we process.  Note that this does not work with jpg modes;  they use the white balance selected in the camera to save the file.  So  if your camera is saving jpg files, you will need to choose the white  balance before you make the shot.</p>
<p>If you like all your photos to look as close as possible to the way  your eyes saw the scene, your concern with white balance will be to get  it “right”.  And many shots should be done just that way.  But if you  want to inject another dimension of creativity into your photography,  try variations of white balance.  We did this with film, sometimes going  to extremes where we purposely processed the film using the “wrong”  chemicals just to get an interesting effect.  We do this in infrared  photography, where natural color has little meaning and we need to  choose colors at the processing step.  (These are both subjects of  future tutorials, in case you are interested.)</p>
<p>Getting the colors “wrong” is not a mistake when we do it with  purpose and creativity.  Someone might not care for the result, but it  is not a mistake, and not liking it is the same kind of thinking that  does not like selective focus or motion blur.  It is a matter of taste.   Next time you are doing photography in a mood to do other than simply  record a scene, try it.  Just look at the light, determine the “correct”  white balance, and then choose something else.  You might like the  results.</p>
<p>Del</p>
</div>
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		<title>Three simple rules</title>
		<link>http://clemsonphotoclub.com/wordpress/?p=96</link>
		<comments>http://clemsonphotoclub.com/wordpress/?p=96#comments</comments>
		<pubDate>Tue, 29 Mar 2011 00:56:07 +0000</pubDate>
		<dc:creator>Del Kimbler</dc:creator>
				<category><![CDATA[Light]]></category>
		<category><![CDATA[Technique]]></category>
		<category><![CDATA[camera settings]]></category>
		<category><![CDATA[creativity]]></category>
		<category><![CDATA[glare]]></category>
		<category><![CDATA[human subject]]></category>
		<category><![CDATA[ISO]]></category>
		<category><![CDATA[lighting]]></category>
		<category><![CDATA[reflector]]></category>
		<category><![CDATA[rembrandt]]></category>
		<category><![CDATA[shutter speed]]></category>
		<category><![CDATA[stray light]]></category>

		<guid isPermaLink="false">http://clemsonphotoclub.com/wordpress/?p=96</guid>
		<description><![CDATA[<p>&#8230; and their exceptions!  Rules in photography are not like rules in chess, where you must obey them faithfully, or basketball, where you might foul if you think you can get away with it.  They are guides, and we need to know about them so we can both use them and break them with <span style="color:#777"> . . . &#8594; Read More: <a href="http://clemsonphotoclub.com/wordpress/?p=96">Three simple rules</a></span>]]></description>
			<content:encoded><![CDATA[<p>&#8230; and their exceptions!  Rules in photography are not like rules in chess, where you must obey them faithfully, or basketball, where you might foul if you think you can get away with it.  They are guides, and we need to know about them so we can both use them and break them with intent and intelligence.</p>
<p>There are really more than three in photography, especially if you include all the variations of composition.  And learning them can be a fascinating and rewarding education in how to use creativity.  But many people don&#8217;t want or intend to go that far, and three useful rules are better than a hundred that we would probably forget.  And, remember, we need to know the exceptions as well as the rules.</p>
<p>The first rule is &#8220;keep your back to the light&#8221;.  This rule has a simple purpose, keeping glare and lens flare causing light out of our camera lens.  And with the added complexity of zoom lenses that are almost standard, there are lots of chances for stray light to enter a lens and cause problems.  So, keeping your back to the light keeps that light out of your lens.  But, what does it do to your subjects?  Well, if they are people, they squint.  And if they are inanimate objects, they have flat lighting that does not raise surface details well, sort of like a crime scene photograph.  Neither of these situations are good, but they can be improved by mentally turning ourselves about 90 degrees.</p>
<p>If the light is off your shoulder, it is probably striking a human subject on the quarter, not face-on.  This is becoming light that Rembrandt might have liked.  And if you are shooting a landscape or still object, the shadows are more interesting.  Of course, this assumes that you can stand with your shoulder to the light and this is the correct place and position for the photo you want to make.  If it isn&#8217;t, just do the best you can and remember that the rule is there to reduce lens flare, not make subjects poorly lit.  So find yourself a shooting position that is a good compromise; think about the light and the shadows, then shoot.</p>
<p>The second rule is &#8220;check your shutter speed&#8221;.  This is especially important with digital cameras in low light, because they will try their best to expose correctly in most cases, and that sometimes means reducing shutter speed to the extent that your subject is blurred.  Good sports photographers know the range of good shutter speeds for the shots they are after, and they set their cameras accordingly before the shot.  You can do the same in how you set ISO and other camera settings.</p>
<p>The point is, check your settings (not just shutter) for the light you have and the shot you want, then set your camera mode accordingly.  If the light is good, don&#8217;t worry.  But you will save some shots if you learn what kind of light makes your shots blurry, and know how to anticipate it in your camera settings.  You might find you need to use flash, or find a reflector, or increase ISO, or just plan for the blur.  The important thing is to know when your camera will blur your shots, and think about how to deal with it before it happens.</p>
<p>The third rule is &#8220;get closer&#8221;.  In general, this means that most people shoot with too much empty space around their subjects, and moving in closer would be an improvement.  So would cropping, but many people don&#8217;t crop, just use what comes out of the camera.  And too much zooming in while cropping can degrade picture quality, so getting the size roughly correct is a good idea.  So, overcome that human tendency that is based in social distance, and get closer to your subjects.</p>
<p>Or, should you move away?  In most cases, closer is better.  But, there are times when moving back would improve framing.  In other cases, moving back gives you room to crop that you might not have had.  (This is especially important in digital SLR cameras that use the old 35mm aspect ratio of  3:2.  These can be difficult to turn into 8&#215;10&#8242;s unless you leave a little room.)  So, is it closer or farther?  The answer could be either.  You need to think about it.</p>
<p>Will this ruin the fun in your photography, all these things (well, just three) that you need to think about?  Probably not.  If you begin by noticing light position, shutter speed, and closeness, you will find that you make decisions about them fairly quickly, and the more often you think about them, the quicker you make those decisions.  If you spend a little time in practice, say 30 minutes a day for 5 days, you will find that the decisions come with the speed of automation, but this automation is your decision process, not a circuit in your camera.  So, that is an improvement in your picture making process, and the result will be more of the kind of photos that you like to show people, and fewer of the other kind.</p>
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		<title>Using Flash &#8211; Or Not</title>
		<link>http://clemsonphotoclub.com/wordpress/?p=88</link>
		<comments>http://clemsonphotoclub.com/wordpress/?p=88#comments</comments>
		<pubDate>Sat, 29 Jan 2011 02:52:17 +0000</pubDate>
		<dc:creator>Del Kimbler</dc:creator>
				<category><![CDATA[Equipment]]></category>
		<category><![CDATA[Light]]></category>
		<category><![CDATA[Technique]]></category>
		<category><![CDATA[aperture]]></category>
		<category><![CDATA[harsh shadows]]></category>
		<category><![CDATA[HDRI]]></category>
		<category><![CDATA[ISO]]></category>
		<category><![CDATA[motion blur]]></category>
		<category><![CDATA[reflector]]></category>
		<category><![CDATA[shadow areas]]></category>
		<category><![CDATA[shutter speed]]></category>
		<category><![CDATA[strobe]]></category>
		<category><![CDATA[sun]]></category>
		<category><![CDATA[using flash]]></category>

		<guid isPermaLink="false">http://clemsonphotoclub.com/wordpress/?p=88</guid>
		<description><![CDATA[<p>This tutorial on flash is about not using flash.  How does that make sense?  Well, there are two main reasons to use flash.  One is to provide light quickly enough (maybe a thousandth of a second) to stop fast action.  The other is to provide light to remedy a scene with an extreme range <span style="color:#777"> . . . &#8594; Read More: <a href="http://clemsonphotoclub.com/wordpress/?p=88">Using Flash &#8211; Or Not</a></span>]]></description>
			<content:encoded><![CDATA[<p>This tutorial on flash is about not using flash.  How does that make sense?  Well, there are two main reasons to use flash.  One is to provide light quickly enough (maybe a thousandth of a second) to stop fast action.  The other is to provide light to remedy a scene with an extreme range of light to dark, one that your camera or film cannot handle on its own.  So without flash in these cases we will have motion blur in one case and a choice between overexposed highlights or underexposed shadows in the other.</p>
<p>Actually, though, flash is not the issue.  The issue is the light, or its lack or excess.  When we have trouble stopping action with the camera shutter, what stops us?  It is the amount of light.  If we had enough light, we could choose the aperture we want as well as the shutter speed we desire.  If we had the right amount of light, we could choose aperture and shutter speed creatively without worrying about over or under-exposure of part of the scene.</p>
<p>When we use flash to fix these problems, we are using a piece of equipment, possibly built-in, to put light somewhere.  While this works, there are times when it also causes problems, as some of the previous tutorials point out.  Harsh shadows, for example, or mixed color of light that makes the result have a color cast that is hard to deal with.  These are the times when we should remember that the problem was the light, not how to use the flash.</p>
<p>So, how can we fix the light without flash?  Let&#8217;s take these cases one at a time, and deal with the unbalanced light first.  This is a very common problem, as anyone who has tried to make an indoor photo which includes a sun-lit window will agree.  We expose for the interior, and the window is over-exposed.  When we use flash in this case, it is to increase the light in the interior until its exposure is close enough to the exposure for the window that the light looks natural, not harsh.</p>
<p>What could we do instead of flash?  We could choose a different time of day, for one.  But frequently that is not a reasonable choice.  So how can we get more light without a flash?  One of the best ways is to use the sunlight that is there.  A large light surface, out of view of the camera lens, can be used to redirect some of that excess sunlight into the darker zone.  Sunlight is actually very attractive; it is a problem only when there is too much or too little.</p>
<p>So, where can you find something like this?  If you plan to use it a lot, get a portable reflector.  These come in a variety of sizes and surfaces, from basic white to translucent to gold, and they are not terribly expensive as photographic equipment goes.  But there are alternatives which are much less expensive.  An assistant (or an easel) holding a piece of white poster board or, if it needs to be stiffer, white foamcore can redirect the light for you.  You might be lucky and find that opening a door in the right place will redirect light for you.  Almost anything lightly colored will work.</p>
<p>You can use these outdoors as well.  Late in the day as the sun is setting the light starts to go, but it is beautiful while it is there.  Just before it goes, use a reflector to gather up some of what there is and direct it where you need it.  In the couple of hours before this, use the gold reflector to mimic those golden hours a little later.</p>
<p>There are ways to make several shots and combine them to deal with light extremes.  This is called high dynamic range imaging, and we will deal with it later.  For these first few light tutorials, I want to keep things a simple and practical as possible, meaning no extra software needed.</p>
<p>Now, the other case is a little more difficult.  When you want to use a shutter speed of 1/1000 but there is not enough light, and there still will not be when you have turned on and reflected as much as you can, about all that is left is to use high speed film or the digital equivalent, high ISO.  Many cameras add significant levels of noise when the ISO is increased.  Some of the newer sensors, though, do a pretty good job at higher ISO levels.  Just think of ISO as another of your creative controls, and boost it up a little and see what you get.  In many cases, what you get will be noisy but the other choice might be no photo at all.</p>
<p>So these five tutorials have really been about light, with flash as a convenient way to deal with the amount on hand.  Using flash well takes practice and, to some degree, equipment.  The small built-in flashes on most cameras are not very powerful, and so are useful only on close objects.  But using flash on close objects is one of the things that makes the light harsh.  Using off-camera strobes can be costly, and gives you another piece of equipment (or two) to carry around.  So, think about the light, whether there is enough, and whether it is in the right place.  And, before you pop up your flash, see if you can do without it.  You might be pleased with the results.</p>
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		<title>Using Flash &#8211; Light Modifiers</title>
		<link>http://clemsonphotoclub.com/wordpress/?p=66</link>
		<comments>http://clemsonphotoclub.com/wordpress/?p=66#comments</comments>
		<pubDate>Wed, 24 Nov 2010 22:06:03 +0000</pubDate>
		<dc:creator>Del Kimbler</dc:creator>
				<category><![CDATA[Equipment]]></category>
		<category><![CDATA[Light]]></category>
		<category><![CDATA[Technique]]></category>
		<category><![CDATA[barn doors]]></category>
		<category><![CDATA[CSI]]></category>
		<category><![CDATA[Do it yourself]]></category>
		<category><![CDATA[Gary Fong]]></category>
		<category><![CDATA[gobos]]></category>
		<category><![CDATA[grid]]></category>
		<category><![CDATA[light modifiers]]></category>
		<category><![CDATA[lighting]]></category>
		<category><![CDATA[Lumiquest]]></category>
		<category><![CDATA[soft box]]></category>
		<category><![CDATA[softening]]></category>
		<category><![CDATA[strobe]]></category>
		<category><![CDATA[strobist]]></category>
		<category><![CDATA[using flash]]></category>
		<category><![CDATA[vignette]]></category>

		<guid isPermaLink="false">http://clemsonphotoclub.com/wordpress/?p=66</guid>
		<description><![CDATA[<p>The first two tutorials on flash dealt primarily with exposure, and the third with the color of light, and all had to do with the overall frame.  This one deals with the light&#8217;s shape and texture, and how to change it.</p> <p>You have probably seen modified light in this sense.  One of the simplest <span style="color:#777"> . . . &#8594; Read More: <a href="http://clemsonphotoclub.com/wordpress/?p=66">Using Flash &#8211; Light Modifiers</a></span>]]></description>
			<content:encoded><![CDATA[<p>The first two tutorials on flash dealt primarily with exposure, and the third with the color of light, and all had to do with the overall frame.  This one deals with the light&#8217;s shape and texture, and how to change it.</p>
<p>You have probably seen modified light in this sense.  One of the simplest is the vignette, typically a shadow area surrounding a portrait.  If you have ever put the wrong lens hood or too many filters on a lens, you might have made a vignette without trying by shadowing the edges.  Just about all light modifiers (except those which affect color, as in the previous tutorial) work by changing the shape or quality of light.</p>
<p><a href="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/before.jpg"><img class="alignleft size-medium wp-image-72" title="without gobo" src="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/before-300x300.jpg" alt="art models in normal light" width="240" height="240" /></a><a href="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/gobo.jpg"><img class="alignright size-medium wp-image-75" title="with gobo" src="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/gobo-300x300.jpg" alt="art models using light and gobo" width="240" height="255" /></a>So if the vignette affects shape, what else might?  Here we get into the mystical sounding world of snoots, barn doors, and gobos.  These change the shape of light in the frame by getting in the way or, as in the origin of the term &#8220;gobo&#8221;, go between the light and the subject.  And how they do that determines the effect.  One of the simplest is simply a card, piece of mat, or whatever is convenient, that is held or positioned to shade part of the subject, as in the first photo pair (with and without).  How it is held is up to you and your assistant, if you have one.  The gobos themselves are quite simple, but the holding device can be sophisti<a href="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/clamps.jpg"><img class="alignright size-full wp-image-74" title="gobo clamps" src="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/clamps.jpg" alt="art models with clamps for holding gobos" width="300" height="300" /></a>cated.  Here are two, a simple clamp and one that can be bent to a particular shape, or one that can attach to a light stand, door frame, or car window.  You can even use your camera strobe to mimic the studio barn doors with a device seen at<a href="http://www.speedlightprokit.com/" target="_blank"> this website</a>.</p>
<p>This tutorial does not cover all sorts of modifiers, though.  In particular, it is limited to those that might be used with an accessory camera strobe.  Most of us don&#8217;t have studio space or want to go to the expense of purchasing studio equipment.  With the use of a camera strobe and some simple equipment, we can achieve similar effects.  And, much of this stuff is DIY, meaning you can make it yourself and keep the costs down</p>
<p>A less common modifier than the simple gobo is a snoot.  Here is a DIY snoot, made from a piece of black construction paper.  You put the large end around the light-emitting part of your flash, and it shields your subject from light at all but near the center.  The result is the appearance of focused light that feathers off to shadow.  <a href="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/snoot.jpg"><img class="alignleft size-medium wp-image-78" title="flash and snoot" src="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/snoot-300x225.jpg" alt="camera strobe with diy snoot" width="300" height="225" /></a>You can make one if about a minute if you have a piece of construction paper and some tape.</p>
<p>Something that affects both shape and quality of light is the grid.  This is something that has a little bit of shaping effect, like a large snoot, but mainly softens the light in the center by using the light pointed directly at the subject and redirecting the light that is off at a slight angle.  The depth of the grid determines the extent of the effect. You can make a grid using foam core and bar straws (<a href="http://lightingmods.blogspot.com/2007/06/diy-black-straws-snoot-grid-part-1.html" target="_blank">instructions here</a>).  Here is a comparison of grid and snoot, with unmodified lighting at left.  The snoot, center, is used to provide overall softening of shadows rather than concentrate at the center; this is done simply by moving the grid a greater distance from the subject.  The grid provides overall softening, while the snoot can be used to more narrowly concentrate the light, especially using a camera strobe.<a href="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/gridsnoot.jpg"><img class="aligncenter size-full wp-image-76" title="standard light, snoot, and grid" src="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/gridsnoot.jpg" alt="art models under various light modifications" width="810" height="360" /></a></p>
<p>One of the biggest challenges with camera strobes is the hardness of the light.  By hardness, I mean light causing shadows with sharply defined edges.  Hardness has to do with the size of the light source relative to the subject.  For example, the sun is very large, but relative to a subject sitting in sunlight it is very small because it is so far away.  Result &#8211; hard light.  On an overcast day, the light seems to be coming from the entire sky, not just the sun.   The light source is very large relative to a subject sitting in this light.  Result &#8211; soft light.</p>
<p>We can change the hardness of light from a camera strobe by making it seem larger. Below is a device made to fit over a popup flash, using an old plastic film can.  It softens the light by spreading it over a larger surface.  And beside it we find a softbox.  The softbox traps light inside and reflects it off internal surfaces, so it is not so direct.   Then it filters through cloth or plastic, over a much larger area than the front of the flash, giving a softening effect.<a href="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/softbox.jpg"><img class="alignright size-medium wp-image-79" title="softening modifiers" src="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/softbox-300x225.jpg" alt="diy film can softener and softbox" width="300" height="225" /></a></p>
<p>So some of the softening effect comes from filtering it through the internal structure of the softbox, but the most softening comes from its size.  So, the larger the softbox, the more softening.  When we use an umbrella reflector to send light to the subject, it is the size and shape of the reflector that achieves the most softening.  And sense the relative size is the main factor, moving it closer will increase the softness.  One of the challenging things about flash photography is that moving reflectors changes both softening and exposure.  Moving it closer softens, but increases light on the subject.</p>
<p>Here are a few pieces of equipment to manage light.  It can be as simple as a light stand or tripod, with an attachment holding the flash and reflector.  Even simpler is bouncing the flash off the ceiling, turning a large area into a light source, or using one of the many flash attachments from <a href="http://www.stofen.com/index.asp" target="_blank">Sto-Fen</a>, <a href="http://www.garyfongestore.com/" target="_blank">Gary Fong</a>, and <a href="http://www.lumiquest.com/" target="_blank">Lumiquest</a> to make the light source bigger.  Years ago press photographers would point the flash up and attach a white card to the back of it with a rubber band.  It worked then, and it works now, by making the light source bigger.  This light stand holds an umbrella bracket.  The bracket allows the camera strobe and umbrella to be aimed as a unit, without moving the light stand. <a href="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/lightstand.jpg"><img class="alignright size-medium wp-image-77" title="light stand with bracket" src="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/11/lightstand-225x300.jpg" alt="light stand and umbrella bracket" width="225" height="300" /></a> The white object on the strobe is a Sto-Fen diffuser; it simply fits over the end of the strobe, held on by friction.</p>
<p>So what have we learned about modifiers?  Well, they work by changing the amount, direction, and/or quality of the light.  The simplest are gobos that can be almost anything, and the next simplest are homemade snoots.  Most gobos are homemade and very inexpensive.  Even a reflector can be inexpensive; just get someone to hold a large piece of white poster board in the right place.  More sophisticated, but still inexpensive, are grids and light modifiers that fit on the flash.  At the more expensive end, but still less costly than studio equipment, are umbrella reflectors.</p>
<p>But the most important device for using camera flash is not a gobo or reflector; it is the cable or remote that lets you move the flash from the top of your camera.  Any distance at all away from the top of your camera will improve the light by giving less of a &#8220;CSI&#8221; look.  First, get a cable that connects the flash to the camera, or a remote sensor (some flashes come with this wireless feature) that lets you move the flash away.  Then, get something to hold it in position.  This can be a tripod (good with a remote sensor) or a bracket to hold the flash and camera (good with a cable).  Moving the camera up and to one side will give you significant improvement of people photos.</p>
<p>All of these things that can vastly improve your flash photography, added together into a flash kit, cost less than a good lens.  (Excellent websites are <a href="http://strobist.blogspot.com/" target="_blank">Strobist</a>, for technique, and <a href="http://www.mpex.com/index.htm" target="_blank">Midwest Photo Exchange</a>, for equipment.)  And some can be fun to make yourself.  If flash is part of your photography, you need to work to improve it by making the things and people you shoot look better.</p>
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		<title>Using Flash &#8211; Light Color and Correction</title>
		<link>http://clemsonphotoclub.com/wordpress/?p=61</link>
		<comments>http://clemsonphotoclub.com/wordpress/?p=61#comments</comments>
		<pubDate>Wed, 17 Nov 2010 19:39:17 +0000</pubDate>
		<dc:creator>Del Kimbler</dc:creator>
				<category><![CDATA[Equipment]]></category>
		<category><![CDATA[Light]]></category>
		<category><![CDATA[Technique]]></category>
		<category><![CDATA[ambient light]]></category>
		<category><![CDATA[basketball]]></category>
		<category><![CDATA[camera settings]]></category>
		<category><![CDATA[candlelight]]></category>
		<category><![CDATA[Color balance]]></category>
		<category><![CDATA[color temperature]]></category>
		<category><![CDATA[electronic flash]]></category>
		<category><![CDATA[Fill flash]]></category>
		<category><![CDATA[kelvins]]></category>
		<category><![CDATA[measurement scale]]></category>
		<category><![CDATA[tungsten]]></category>
		<category><![CDATA[using flash]]></category>
		<category><![CDATA[white balance]]></category>

		<guid isPermaLink="false">http://clemsonphotoclub.com/wordpress/?p=61</guid>
		<description><![CDATA[<p>One of the problems of using flash, especially when the ambient light is strong, is matching the colors.  Light has color, typically measured in kelvins.  Why kelvin and what the &#8220;color temperature&#8221; means is too much to go into here, and isn&#8217;t really about photography.  Let&#8217;s just say there is a measurement scale for <span style="color:#777"> . . . &#8594; Read More: <a href="http://clemsonphotoclub.com/wordpress/?p=61">Using Flash &#8211; Light Color and Correction</a></span>]]></description>
			<content:encoded><![CDATA[<p>One of the problems of using flash, especially when the ambient light is strong, is matching the colors.  Light has color, typically measured in kelvins.  Why kelvin and what the &#8220;color temperature&#8221; means is too much to go into here, and isn&#8217;t really about photography.  Let&#8217;s just say there is a measurement scale for how the light looks in terms of its color, and this scale (in our region of interest)  is a four digit scale.</p>
<p>At one end, the infrared end, invisible infrared turns into visible red, and at the other blue fades into invisible ultraviolet.  There is a good description of color temperature at mediacollege.com, including a <a class="wp-oembed" href="http://www.mediacollege.com/lighting/colour/colour-temperature.html" target="_blank">good figure that relates kelvins to light sources</a>.  We have deep blue sky at around 10,000, overcast daylight around 7,000, candlelight at 1,000.  An important point to remember is that electronic flash is a little more than 5,000, and so is noon sun.</p>
<p>Modern digital cameras have a color temperature setting, usually called &#8220;white balance&#8221;.  We call it white balance because if we can make whites look correct, other colors should fall in place.  Camera settings are made in kelvins or in types of light, like daylight, flash, or tungsten.  And when the light is consistent, even though it is blended of different sources, we can set the camera to adjust for it.</p>
<p>If we are using fill flash with sunlight or open shade 0n an overcast day, we have little problem.  The color of the light from the flash is close enough to sunlight that correction is not needed.  This is how flash systems are designed, and if you only use flash when it is the only light or with sunlight, you don&#8217;t need to worry about white balance correction.  Just set it for flash or sunlight.</p>
<p>But what if you are indoors, with tungsten light (conventional light bulbs) and flash?  The light from the flash is on the blue end, but the light from the light bulbs in near the red end.  If you fire a flash in a room with conventional light bulbs turned on, you can&#8217;t rely on flash and tungsten light being fully mixed.  There will be areas where the flash dominates, and other areas where the tungstens dominate.  It is likely that the subject will have flash illuminating it, and its shadows will not.  If your camera white balance is set for flash, the subject will look normal and the shadows will have an orange to red color cast.  If you set your camera for tungsten light, your subject will look too blue.</p>
<p>There are no camera settings or lens filters that will correct this, because the light sources are not fully mixed.  Instead, you need to either rely on one light source or the other, or else you need to modify one light source to match the other.  If you can turn the tungsten lights off, or at least to a lower level, the flash will overwhelm all but the darkest shadows.  So, the flash setting would work.</p>
<p>If turning off one set of lights is not possible, you will need to modify the light coming from the flash.  This is referred to as &#8220;gelling&#8221; the flash because we place a colored gel in front of the flash to color its light.  If the ambient light is tungsten, we can set the camera white balance to tungsten and put a CTO (color temperature orange) gel on the flash.  There are different strengths or grades of CTO gel, so you might need to experiment a little to find the correct one.</p>
<p>If the lights are fluorescent, the problem is more difficult.  This is not because the principle is different; it is exactly the same.  But, fluorescent lights come in different colors, and it can be difficult finding the right gel, usually a shade of green.  With increasing use of fluorescents as replacements for tungsten lights, this problem will get worse.  It is easy to find a room with both tungsten and fluorescent light.  Fortunately, in this case it is probably easier to turn off one kind of light, simplifying the solution.</p>
<p>Gels are not terribly expensive.  I use gels from <a class="wp-oembed" href="http://www.mpex.com/browse.cfm/4,13760.html" target="_blank">Midwest Photo Exchange</a>, but you can get them anywhere Lumiquest or Rosco products are sold.  With a little bit of experimenting, you can usually find a color or density that fits your situation.  They are re-usable, and easy to carry and mount on your flash.  If possible, try them out in advance at home, or on location if you have access.  This will save both time and risk of error.</p>
<p>In some cases, you will find you just can&#8217;t match your flash with the ambient light.  A good example is at a basketball game.  Lights in gymnasiums are not chosen for the convenience of photographers.  The professionals, sitting on the floor below the baskets, are using high powered flash guns that can overwhelm the overhead lights.  But from the seats, you don&#8217;t have a chance.  Your flash is not likely to reach far enough, anyway, so your best shot is to take the flash off and do a custom white balance to set your camera for the (usually unusual) lighting that exists.  Consult your camera on making a custom white balance; camera models differ in how this is done.</p>
<p>If none of these situations match yours, or if you just can&#8217;t seem to find the right gels, don&#8217;t give up.  Just decide how much you want the photo.  Sometimes a photo with funny colors due to lighting is preferred to no photo at all.  And if someone criticizes the colors, you will have a good explanation of why it happened.</p>
<p>Finally, about that kelvin scale.  Near the high end (large numbers, high color temperature) we find light that is referred to as &#8220;cool&#8221;.  Near the low end (low numbers, low color temperature) we call the light &#8220;warm&#8221;.  Go figure.</p>
<p>Del</p>
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		<title>Using Flash &#8211; Fill Flash</title>
		<link>http://clemsonphotoclub.com/wordpress/?p=49</link>
		<comments>http://clemsonphotoclub.com/wordpress/?p=49#comments</comments>
		<pubDate>Sun, 31 Oct 2010 22:30:36 +0000</pubDate>
		<dc:creator>Del Kimbler</dc:creator>
				<category><![CDATA[Equipment]]></category>
		<category><![CDATA[Light]]></category>
		<category><![CDATA[Technique]]></category>
		<category><![CDATA[ambient light]]></category>
		<category><![CDATA[aperture control]]></category>
		<category><![CDATA[depth of field]]></category>
		<category><![CDATA[Fill flash]]></category>
		<category><![CDATA[shadow areas]]></category>
		<category><![CDATA[shutter speed]]></category>
		<category><![CDATA[sync speed]]></category>
		<category><![CDATA[TTL]]></category>
		<category><![CDATA[using flash]]></category>

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		<description><![CDATA[<p>Fill flash is the second most common use of on-camera flash (second to flash as the primary light), and perhaps should be used more often than it is.  Fill is a very descriptive term; the light from the flash is used to &#8220;fill&#8221; shadow areas that are expected to be too dark.  But if <span style="color:#777"> . . . &#8594; Read More: <a href="http://clemsonphotoclub.com/wordpress/?p=49">Using Flash &#8211; Fill Flash</a></span>]]></description>
			<content:encoded><![CDATA[<p>Fill flash is the second most common use of on-camera flash (second to flash as the primary light), and perhaps should be used more often than it is.  Fill is a very descriptive term; the light from the flash is used to &#8220;fill&#8221; shadow areas that are expected to be too dark.  But if you think that way, you might shy away from using it because it sounds difficult.  Here is a different way to look at it.</p>
<p>When using flash as the primary light source, we generally don&#8217;t give a thought to the other light, which is usually the ambient light, the light that was there to begin with.  But sometimes we want to use this light, maybe because it is almost enough, maybe because there are things it lights that the flash can&#8217;t.  A common example is a backlighted portrait subject taken out of doors.  If natural light is behind the subject, probably lighting the general scene and maybe even attractively backlighting the subject, then it is not lighting the front or face.  The flash has to do that.</p>
<p>So, how do we do that?  First, we consider what controls what.  In most flash photography, the flash intensity (generally controlled by the camera) and the aperture (set on the camera) control the exposure.  This is because flash is both stronger than ambient light up close, and faster than the shutter.  So, shutter speed doesn&#8217;t matter.  Or, does it?</p>
<p>With fill flash, shutter does matter, because the combination of shutter speed and aperture control the exposure for the parts of the scene lighted by ambient light.  So, if you are not concerned about ambient light, set the aperture for the depth of field you want and turn on the flash with your shutter set at flash sync speed.  (Flash sync speed on modern digital cameras is pretty quick, usually at least 1/125 sec.)  Your camera will expose accordingly, and will usually be correct.   But if you want more ambient light effect, just reduce the shutter speed.</p>
<p>Let&#8217;s say, just for illustration, that a correct ambient light exposure would be f/8 and 1/30.  If you set your shutter speed at 1/125, the scene would be under-exposed by about two stops.  If you then turn on your flash and set your camera correctly, that scene now becomes exposed correctly <em>wherever light from the flash falls on it</em>.  That might mean dark shadows in the background.  Now, if you set your shutter speed to 1/60, it is only one stop under-exposed.  So if your flash is turned on, it exposes what it hits correctly, and the background is a little under-exposed.  Maybe just enough to make an attractive picture.</p>
<p>So, the key to remember is the aperture and flash expose for flash light, and aperture and shutter expose for ambient light.  If you want more ambient, just lower the shutter speed.  On modern cameras, it is even easier than this.  Most cameras have a fill flash mode.  They might call it something else, like outdoor portrait, or backlit, but it is a fill flash mode.  When you are using your camera&#8217;s flash or an external flash that can be controlled by your camera (probably a ttl flash mode), and you select a fill flash mode, your camera does a good job of combining ambient and flash light.  You really don&#8217;t have to think much about it once you have set the camera correctly.</p>
<p>On a manual camera, or for those who just want more control, connect your ttl flash, then go to manual mode.  Press the shutter halfway to set exposure and see what it looks like.  Adjust until you can make a decent ambient light photo.  Now increase the shutter speed to darken the background as much as you like, and turn on the flash to light the subject.  Press the shutter button and make a fill-flash picture.</p>
<p>Here are some examples of fill flash:</p>
<div id="attachment_54" class="wp-caption alignright" style="width: 280px"><a href="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/10/DLK_08_195202.jpg"><img class="size-medium wp-image-54  " title="Del studio portrait" src="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/10/DLK_08_195202-300x225.jpg" alt="Self portrait with ambient light" width="270" height="203" /></a><p class="wp-caption-text">Ambient light on desk and wall is used, not overpowered by flash</p></div>
<p>In this shot, there was ambient light on the wall behind me, and the strobe light was in front.  I did not want strong shadows behind my head, and did not want the flash to overpower the ambient light on the desktop.  Fill does the job here.  This was 1/50 sec at f/5.6 and studio strobe through an umbrella.  Not really fill, but a single light combined with ambient does the same thing.</p>
<div id="attachment_51" class="wp-caption alignleft" style="width: 280px"><a href="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/10/DLK_07_172425.jpg"><img class="size-medium wp-image-51 " title="County Fair" src="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/10/DLK_07_172425-300x225.jpg" alt="Carnival ride for fill-flash example" width="270" height="203" /></a><p class="wp-caption-text">Fill flash to light near foreground, while keeping background lights.</p></div>
<p>Here is a case where what I wanted to save was in the background, the lighted carnival rides, and their correct exposure would leave the foreground in shadow.  Fill flash, camera mounted, exposed the near foreground, which I now find is really a little over-exposed.  Shutter at 1/8 and aperture at f/8.  I should have reduced the flash intensity here, by dialing back the power or using flash compensation.</p>
<div id="attachment_53" class="wp-caption alignright" style="width: 280px"><a href="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/10/DLK_08_044768.jpg"><img class="size-medium wp-image-53 " title="Moose" src="http://clemsonphotoclub.com/wordpress/wp-content/uploads/2010/10/DLK_08_044768-300x225.jpg" alt="Museum scene as fill flash example" width="270" height="203" /></a><p class="wp-caption-text">Museum moose with desirable background light</p></div>
<p>This moose found in a museum had nice backlighting, and pretty good lighting in general.  But there were shadows on the lower head that fill flash fixed.  This was 1/60 and f/4.  Notice that the shot was from below the level of the moose head.  Another place where you find this lighting is at a fashion show, shooting runway models from slightly below.  Combining ambient with a small amount of flash, with just enough shutter speed to avoid blur, gives a flattering light and attractive picture.  In general, you don&#8217;t have to think about avoiding motion blur with flash, but with slow shutter speeds and ambient light, you can get ghost edges if the speed is too low.  I usually try to keep the ambient at least one stop below correct exposure, letting the flash define the main subject.</p>
<p>So, is fill flash difficult?  Not when you have good ambient light and you can combine it with flash.  Remember that you are using the combination, and that the shutter speed controls the ambient exposure.  In most cases, using the fill flash mode on your camera is enough to get it right.</p>
<p>When does this not work well?  When subjects are moving rapidly (give up on ambient and freeze action with the flash) or when the ambient is both strong and colored differently than the flash.  The color of light from your flash is about what you would find outdoors on an overcast day.  Dealing with the color of light is coming in a future tutorial.</p>
<p>Try fill flash.  Find a subject you can backlight and experiment before you put yourself into a situation where lack of practive might make you miss an important shot.  Practice just a little, and become a fill flash expert.</p>
<p>Del</p>
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		<title>Using Flash &#8211; Basic Exposure</title>
		<link>http://clemsonphotoclub.com/wordpress/?p=41</link>
		<comments>http://clemsonphotoclub.com/wordpress/?p=41#comments</comments>
		<pubDate>Sun, 03 Oct 2010 21:52:12 +0000</pubDate>
		<dc:creator>Del Kimbler</dc:creator>
				<category><![CDATA[Equipment]]></category>
		<category><![CDATA[Light]]></category>
		<category><![CDATA[Technique]]></category>
		<category><![CDATA[camera]]></category>
		<category><![CDATA[F-number]]></category>
		<category><![CDATA[hot shoe]]></category>
		<category><![CDATA[ISO]]></category>
		<category><![CDATA[lcd screen]]></category>
		<category><![CDATA[light modifiers]]></category>
		<category><![CDATA[shutter speed]]></category>
		<category><![CDATA[strobist]]></category>
		<category><![CDATA[Through-the-lens metering]]></category>
		<category><![CDATA[TTL]]></category>
		<category><![CDATA[using flash]]></category>
		<category><![CDATA[web]]></category>

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		<description><![CDATA[<p>A few days ago, when photographers were picking up their works from our Member Show, a couple of people asked me about using flash.  My first though was &#8220;Wow, that&#8217;s a tough subject.&#8221;  But, what are tutorials for?  If I only wrote tutorials on easy subjects, what good would they be?</p> <p>So, here goes.  <span style="color:#777"> . . . &#8594; Read More: <a href="http://clemsonphotoclub.com/wordpress/?p=41">Using Flash &#8211; Basic Exposure</a></span>]]></description>
			<content:encoded><![CDATA[<p>A few days ago, when photographers were picking up their works from our Member Show, a couple of people asked me about using flash.  My first though was &#8220;Wow, that&#8217;s a tough subject.&#8221;  But, what are tutorials for?  If I only wrote tutorials on easy subjects, what good would they be?</p>
<p>So, here goes.  But, there won&#8217;t be one, there will be five.  And at the start, I want to remind you of the links at the side of this tutorial to some of my favorite resources, where you will find a link to Strobist.com, one of the most informative photography resources on the Web.  Strobist is a great source of information on use of camera strobes, those designed to use with a hot shoe whether or not (and usually not) they are mounted on your camera.  Go there for details.</p>
<p>Here I will try to stick to fundamentals to keep things understandable for everyone, and let those interested in specific problems go to Strobist.  You won&#8217;t hurt my feelings if you go there right now, instead of reading my tutorial.  (The Web doesn&#8217;t work that way.  If you do that, I probably won&#8217;t ever know about it.)</p>
<p>The five articles, of which this is the first, are:</p>
<ul>
<li>Using Flash &#8211; Basic Exposure,</li>
<li>Using Flash &#8211; Fill Flash,</li>
<li>Using Flash &#8211; Light Color and Correction,</li>
<li>Using Flash &#8211; Light Modifiers, and</li>
<li>Using Flash &#8211; When and How Not To.</li>
</ul>
<p>Fill flash is when other light is your primary source, and you &#8220;fill&#8221; the dark shadows with flash.  Light color has to do with the fact that different kinds of light (sunlight, indoor with light bulbs, etc) has different color, and how to deal with it.  Light modifiers are things with interesting names that change the light from your flash somehow.  And we will finish with some discussion on how not to use flash when lesser mortals would go ahead and do it.  To make things easier, these articles will follow in order, so to make the most of it use the comment feature on this blog to ask questions and discuss.</p>
<p>Now, on to basic exposure.  Modern cameras do a very good job of calculating proper exposure in most cases, including with flash.  If you understand how flash exposure is determined, you will make fewer mistakes with it and more of your pictures will turn out better.  So, you don&#8217;t really have to calculate flash exposure as we did in the old days before computers and cellphones, but if you know a little of the how, you can use your camera more effectively.</p>
<p>All ambient light camera exposure is a combination of ISO (sensitivity to light), shutter speed (how long the shutter is open) and aperture (size of the opening in the lens).  For a given ISO setting, shutter speed and aperture combine to define the amount of light (reflected from your subject) will fall on your film or sensor.  This is true for conventional, ambient light photography, i.e., without flash.  With flash as your primary light source, the flash takes the place of the shutter speed, and your camera actually measures the amount of light coming from your flash (reflected from the subject) and turns it off when there is enough.</p>
<p>Here is how that works.  First, you determine, by looking around, that things are darker than they are outside at noon.  Typical of these situations are indoor settings where the ambient light is not enough to make a good picture.  Some signs of that happening are that you start to make a picture and little red symbols appear on your lcd screen to warn you, or your camera displays a shutter speed like 1/8 in red, or you take a picture and when you look at it on the lcd screen everything looks too dark or blurry.  This can happen whether you have a fancy expensive camera or an inexpensive simple one.  In fact, almost all of this stuff on flash applies to both sophisticated cameras with manual controls and simple cameras with mostly automatic operation.</p>
<p>In any case, somehow you have just determined that there is not enough light to make a picture.  Being no dummy, you realize that the only other source of light you have handy is your camera flash, so you turn it on.  It quickly warms up and, when you push the shutter button this time, the flash fires and your picture&#8217;s exposure is pretty good.  (Bad things can still happen, but we will leave those to later.)</p>
<p>What your camera did, slowed down substantially, was this:</p>
<ol>
<li>Sense the mode your camera and flash are set to.</li>
<li>Open your lens (maybe) and do a quick, short &#8220;pre-flash&#8221;; this lets the camera check to see how much exposure is needed, as controlled by the duration of flash and size of the aperture.</li>
<li>Set the aperture as the pre-flash dictates, and do the real flash for as long as it needs at that aperture to get a good exposure.  Some cameras let you choose the aperture yourself, in an aperture-preferred mode.</li>
<li>Picture is taken.  Depending on your settings you might see the result on your lcd screen, or you might have to go to playback mode to see it.</li>
</ol>
<p>That pre-flash, by the way, is a common characteristic of all so-called TTL (through the lens) flash systems, meaning the camera measures the light coming through the lens.  A slightly longer pre-flash or multiple flashes show you are using red-eye reduction.  This fools your eye&#8217;s iris into closing a little, so the flash won&#8217;t be reflected from the back side of your subject&#8217;s eyeball, making them look demonic.</p>
<p>So why go through all this description, if it is automatic?  Because it matters in other ways.  The most significant?  That in this kind of flash your shutter speed doesn&#8217;t matter.  It doesn&#8217;t matter because the flash is almost always quicker than the shutter.  All that matters is that the shutter is open long enough so your sensor &#8220;sees&#8221; all the flash.  On most cameras with manual controls, that is your max flash sync speed, usually in the vicinity of 1/160 to 1/250 of a second.  On older film cameras, it was usually about 1/30 or 1/60.</p>
<p>And why is this important?  Well, for one thing, your flash is fast enough to freeze motion.  Camera strobes flash at anywhere from 1/1000 to 1/20000 of a second, depending on how much light your camera thinks the subject needs.  So you not only do not need to use your shutter speed to freeze action in flash photography, you should not even try.  There are other reasons to use your shutter speed, but we will deal with those in the next tutorial.</p>
<p>Another reason this is important is that it might help you understand what is going on with your camera.  For example, if there is very little light at all, and you choose a small aperture (large f/number), your flash duration will be longer.  That means it will use more battery power and take longer to re-cycle and be ready for another flash shot.  A large aperture, that lets in more light, will let they flash stop quicker, so it takes less battery power, and recycles faster.  (The two things that take the most of your camera&#8217;s battery capacity are the lcd screen and the flash.  Setting the lcd screen so it is usually off can double your battery life.)</p>
<p>So if you take a shot and want to take a second, but your camera won&#8217;t because your flash is recycling, you can help by choosing a larger aperture if that is feasible.  Of course a larger aperture means less depth of field, a subject for another tutorial.  For now, just remember that a large aperture means less of the things in your picture might be sharp, depending on their distance from the camera and where you are focused.</p>
<p>Isn&#8217;t flash easy?  Mostly automatic.  Even on a sophisticated digital slr, you just move your mode dial from Auto or Program to Aperture and choose an f/number; the camera and flash do the rest.  And as long as your flash has enough power to light the scene, you get a good picture.  (The built-in flash might not have enough; this is why some people buy an additional flash, to mount in a hot-shoe or fire remotely.)</p>
<p>In this ease of use comes a most significant fact:  Your flash duration combines with the aperture size to regulate the exposure.  And this is pretty much independent of your shutter speed, assuming you have not set it faster than your camera&#8217;s flash sync speed.  Knowing this should help you make better indoor flash pictures.  This isn&#8217;t all there is to know, but it ought to be enough to cover a lot of situations.</p>
<p>So that is basic flash exposure.  Over the next few tutorials we will get into more details, but this ought to help you eliminate some of those underexposed and blurry pictures taken indoors with insufficient light.</p>
<p>If you want to know the best flash settings to make a picture from the upper deck of a football stadium, my best advice is to use your cellphone.  The pictures are not likely to be any good whatever you do, unless you just want proof that you were there.  Some pictures are just too hard to make, usually because there isn&#8217;t enough light or too much light, and the flashes we use on or near our cameras just aren&#8217;t powerful enough.</p>
<p>Del</p>
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		<title>Setting up a gallery</title>
		<link>http://clemsonphotoclub.com/wordpress/?p=28</link>
		<comments>http://clemsonphotoclub.com/wordpress/?p=28#comments</comments>
		<pubDate>Wed, 22 Sep 2010 20:41:10 +0000</pubDate>
		<dc:creator>Del Kimbler</dc:creator>
				<category><![CDATA[General]]></category>
		<category><![CDATA[Software]]></category>
		<category><![CDATA[Coppermine]]></category>
		<category><![CDATA[Flickr]]></category>
		<category><![CDATA[gallery software]]></category>
		<category><![CDATA[Login]]></category>
		<category><![CDATA[Member Gallery]]></category>
		<category><![CDATA[smugmug]]></category>

		<guid isPermaLink="false">http://clemsonphotoclub.com/wordpress/?p=28</guid>
		<description><![CDATA[<p>Photo sites have their differences, whether Flickr, Smugmug, or someplace we have never heard of .  Many low-budget places (like us) use Coppermine or something similar because it is free.  Free doesn’t need to mean low on features, though.  Coppermine is very powerful, but you might want a little help in getting started.  If <span style="color:#777"> . . . &#8594; Read More: <a href="http://clemsonphotoclub.com/wordpress/?p=28">Setting up a gallery</a></span>]]></description>
			<content:encoded><![CDATA[<p>Photo sites have their differences, whether Flickr, Smugmug, or  someplace we have never heard of .  Many low-budget places (like us) use  Coppermine or something similar because it is free.  Free doesn’t need  to mean low on features, though.  Coppermine is very powerful, but you  might want a little help in getting started.  If you want to use this  tutorial to get started, you might want to print it or open it in a new  window or tab.</p>
<p>First, you must have an account at our Member Gallery, meaning you  must register before you can do anything beyond looking at the  pictures.  If you have not yet logged in at the Member Gallery, you will  see a Register link near top center of the main page.  (You can always  get to the main page by clicking on the Coppermine logo at top right.)   When you click “Register” you will first see our gallery terms and  conditions.  These are not extreme; you don’t give up any rights here,  and we don’t sell your private information.  You must agree to the Terms  and Conditions to proceed with registration.</p>
<p>Click on “I Agree” at the bottom to see your registration page.  Now  stop just a minute and think about your Username.  You can use just  about anything, but this is one way people can find your photos.  You  can use your first and last name, or a nickname, or something cryptic.   But, this is hard to change, so give it a few second’s thought.  Your  password can be anything you choose.  We won’t know what your password  is, so if you forget it, all I can do is give you a new one.  You must  enter a valid email address, because that is how you will be informed  your account activation.  The rest of the form is optional; fill in what  you would like other members to see.  Visitors (people not logged in)  cannot see this information.</p>
<p>When finished, click “Submit registration” at the bottom of the  form.  An email will be sent to us, letting us know you have  registered.  Once we confirm that you are a dues-paid member, you will  receive an email (at the address you entered above)  telling you that  your account has been activated.</p>
<p>When you return to the Member Gallery following account activation,  you need to Login.  Click the “Login” link near top center of the main  page. You will be prompted to enter your Username or the email address  you entered during registration, and your password.  Enter those, click  “OK”, and your are in.  Notice now that you have some new links on the  main page.</p>
<p>Just below the set of links that all visitors see are four new ones.   First from left is “Create/order my albums”.  Click on this to see your  albums (you may have more than one) or create one.  Near the center of  the page is the “New Album” link with a green plus sign.  Click this and  a place for an album name opens up next to it.  Enter the name for this  album and click “OK” (or “Cancel” if you decide to do this later).   Your new album shows up in the list at left, with your older ones if  there were any.  You can drag these albums up and down, to set the order  they will be seen in the Album list that all can see.  If you hover  your pointer over an album name, its Edit link appears.  This is to  modify the album name, but you also need to click it to select an album  before you  edit its properties.  The “Album Properties” link is very  useful.  There you can select any album, give it a text description that  will be displayed in the album pages, decide whether all visitors can  see this album, or just registered members, and decide whether visitors  can post comments and rate your pictures.  Click “Update album” at the  bottom of the screen to accept your edits.  Your album is done so far;  if you want to do anything else, you need to click a link at the top of  the page.  A useful one after creating an album is “Upload file”.</p>
<p>This is where you can  upload photos.  First, you have to select an  album name at the upper left corner of this dialog, even if you only  have one.  This enables the “Browse” button.  Click “Browse” to open a  file dialog on your computer to select the file or files you want to  upload.  If you want to upload more than one, select as many as you  want.  At this point, you can see that if you want to upload several  photos, you should put them in a single folder or directory on your  computer.  You should also be sure they are no bigger than 1024 pixels in  their larger dimension, and they should be jpg file types.  As soon as  you select the ones you want and click “Open”, the upload starts.  You  can follow its progress as “Pending” changes to “Uploading” and then  “Complete” for each photo.  You can also cancel individual photos before  they start, and cancel the entire upload before you go further. If you  want to work further with these files, click “Continue”.  (Don’t try to  upload file names that are already in one of your albums; this will  cause an error message.  If you want to have a photo display in more  than one album, send me an email; or wait for another tutorial.)</p>
<p>Now you should be at the “Edit files” screen. You can give photos  titles, descriptions, and keywords.  If your photo software puts titles,  descriptions and keywords in Exif data, they should show up here, but  you can also enter them from scratch or change them.  When finished,  click “Apply changes” at the bottom of this screen.  Note that you can  always come back here from the Album Manager by selecting an album and  clicking “Edit Files”.  Notice again the coppermine does not take you to  a new page.  You might be finished here, but the gallery software does  not know what you want to do next, so it waits.  As before, click a link  at the top to do something.</p>
<p>There is more that can be done in our Member Gallery, but this should  be a good start.  Don’t be shy about browsing around; you can’t hurt  anything.  The worst that can happen is you might delete one of your own  photos.  Enjoy the gallery and member albums, and think about what new  ideas this might give you.</p>
<p>Del</p>
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		<title>So why tutorials?</title>
		<link>http://clemsonphotoclub.com/wordpress/?p=18</link>
		<comments>http://clemsonphotoclub.com/wordpress/?p=18#comments</comments>
		<pubDate>Tue, 10 Aug 2010 21:33:49 +0000</pubDate>
		<dc:creator>Del Kimbler</dc:creator>
				<category><![CDATA[Equipment]]></category>
		<category><![CDATA[General]]></category>
		<category><![CDATA[Light]]></category>
		<category><![CDATA[Selling and showing]]></category>
		<category><![CDATA[Software]]></category>
		<category><![CDATA[Subject and Styles]]></category>
		<category><![CDATA[Technique]]></category>
		<category><![CDATA[brand]]></category>
		<category><![CDATA[camera]]></category>
		<category><![CDATA[club]]></category>
		<category><![CDATA[maker]]></category>
		<category><![CDATA[model]]></category>

		<guid isPermaLink="false">http://clemsonphotoclub.com/wordpress/?p=18</guid>
		<description><![CDATA[<p>Well, why not?  I don&#8217;t assume we are all equal in experience, skill, knowledge, or interest.  But it is pretty safe to believe that many people who join a photography club are interested in learning more than they know about photography.  Another thing I don&#8217;t assume is that well all have the same class <span style="color:#777"> . . . &#8594; Read More: <a href="http://clemsonphotoclub.com/wordpress/?p=18">So why tutorials?</a></span>]]></description>
			<content:encoded><![CDATA[<p>Well, why not?  I don&#8217;t assume we are all equal in experience, skill, knowledge, or interest.  But it is pretty safe to believe that many people who join a photography club are interested in learning more than they know about photography.  Another thing I don&#8217;t assume is that well all have the same class of cameras, or ought to.  We have the camera we want and can also afford at any give time.  And, the best camera, I have heard it said, is the one you have with you.  Not model or maker specific.</p>
<p>So, we have a number of people with different equipment, different experience, different expectations, but a common interest.  I can&#8217;t make a tutorial that will equally satisfy every reader, but I bet I can make a collection of tutorials that a lot of readers will find useful.  So, that is what I will try to do.  They will not be long, they will not preach a particular brand or genre.  They will take into consideration that some of you read the manual more than others, and that a few have lost theirs some time ago.  They will also take into consideration that many people don&#8217;t want to become accomplished professional photographers, they just want their pictures to come out better.</p>
<p>So, here&#8217;s the plan.  I will begin making a list of topics.  Already have a list of categories to classify these, and an inclination to make a lot of these about light (thus the blog title) in some way.  But this is a club blog, so I hope to get some suggestions from you.  And, as topics are developed, I hope to get continuing feedback on how this is helping your photography, and what topics might help it more.</p>
<p>These will certainly deal with equipment, software, and technique.  They will also deal with light, and subjects for photography.  Some might be interested in someday showing their work, or selling it, if only to friends.  These are all possibilities, and they also cover the set of categories I have developed so far.  So, watch this space, and expect a new topic posted in late September.  (Not the next topic, that is the early September topic for our overall site launch, on September 10).</p>
<p>Del</p>
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