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Sports shots with canon 20D
New kit for Xmas, 20D plus 400usm is lens, heavyweight stuff.
Having problems with underexposure. Set on sports automatic, which sets the speed of shutter and ISO, shooting in snow at the moment. Any advice? Tried some sports shots yesterday at 1000th second, on tv setting, shots were almost black. They 'lift' with photoshop, but lose the clarity, very noisy / grainy. If I go to a slower lens setting, say 250th, will that help? Just a beginner with this level of equipment. Chris |
#2
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Sports shots with canon 20D
Roddytoo wrote:
New kit for Xmas, 20D plus 400usm is lens, heavyweight stuff. Having problems with underexposure. Set on sports automatic, which sets the speed of shutter and ISO, shooting in snow at the moment. Any advice? Tried some sports shots yesterday at 1000th second, on tv setting, shots were almost black. They 'lift' with photoshop, but lose the clarity, very noisy / grainy. If I go to a slower lens setting, say 250th, will that help? Just a beginner with this level of equipment. Chris Chris, This may be one cause of dark pictures: The 20D (and other Canon SLRs) have a big dial on the back, which is used for exposure compensation. Look up this dial in your manual, and be sure that your exposure compensation is set to 0. I almost always work in Av mode. For action, I usually set the aperture to its widest, and set the ISO manually to trade speed for noise. The aperture controls depth of field, so primary control of aperture is first in my opinion. Roger Photos at: http://www.clarkvision.com |
#3
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Sports shots with canon 20D
"Roddytoo" wrote in message
... New kit for Xmas, 20D plus 400usm is lens, heavyweight stuff. Having problems with underexposure. Set on sports automatic, which sets the speed of shutter and ISO, shooting in snow at the moment. Any advice? Tried some sports shots yesterday at 1000th second, on tv setting, shots were almost black. They 'lift' with photoshop, but lose the clarity, very noisy / grainy. If I go to a slower lens setting, say 250th, will that help? Just a beginner with this level of equipment. Chris "Sports Automatic" may be the culprit. Those silly icon "Basic" modes are tuned to set you camera at the lowest common denominator. It wants to turn the snow to 18% grey, so it underexposes the scene. Actually, anytime you use a camera with TTL metering, this will happen, but the "Automatic" settings will prevent you from remedying the situation. Set your camera to Program, if you don't want to use Aperture Priority, and use Program shift to open the aperture up between 2/3 stop and a full stop. Never use the "Basic" modes, they cripple your camera. You lose many of the parameter settings, several functions, like Program Shift and all of your custom functions. I have the 20D, and it's a wonderful camera, when used to its full potential. -- Skip Middleton http://www.shadowcatcherimagery.com |
#4
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Sports shots with canon 20D
On Tue, 27 Dec 2005 15:32:51 -0000, "Roddytoo"
wrote: New kit for Xmas, 20D plus 400usm is lens, heavyweight stuff. Having problems with underexposure. Set on sports automatic, which sets the speed of shutter and ISO, shooting in snow at the moment. Any advice? Tried some sports shots yesterday at 1000th second, on tv setting, shots were almost black. They 'lift' with photoshop, but lose the clarity, very noisy / grainy. If I go to a slower lens setting, say 250th, will that help? Just a beginner with this level of equipment. Chris Agree with Roger. Av, lens wide open. Keep the ISO as low as you can without the shutter speed becoming too slow. What are you shooting? With a 400mm lens (600mm+ equivalent) then conventional wisdom suggest a shutter speed no slower than 1/600sec for handholding, maybe 1/500th with a monopod. If you have IS then you've got a chance a couple of stops slower. 1/250th might be OK for you, but without IS I certainly couldn't handhold a 400mm at that. For lots of sports I think you will find the 400mm too long. I use a 70-200 mostly, with a 300mm and a 1.4 convertor mostly in the bag. Then again, I'm on the touchline usually. I think a very useful manual function in a DSLR would be to set a fixed aperture and have the ISO move to keep the shutter speed within a range. With the 350D it's a pain to change the ISO, as it's on a menu. I always shoot RAW and in extremis find that 2/3 of a stop underexposure can be recovered in the RAW convertor. In a predomnately white scene (e.g. lots of snow) the camera will tend to underexpose, but not to the point of making the scene black. -- Tim Hobbs |
#5
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Sports shots with canon 20D
Skip M wrote:
"Sports Automatic" may be the culprit. Those silly icon "Basic" modes are tuned to set you camera at the lowest common denominator. It wants to turn the snow to 18% grey, so it underexposes the scene. Actually, anytime you use a camera with TTL metering, this will happen, but the "Automatic" settings will prevent you from remedying the situation. I've found that especially for sports shooting, it's often better to go to full-manual exposure settings, as exposure conditions can often vary so much you end up with a range of bad exposures. A good example was a few years ago when I was shooting stock-car races, and had particular problems with dark cars turning out too light with wash-out surroundings. Instead, I found that if metered for the overall lighting, taking a reading off some well-lit concrete, and locking that exposure (which on a nice day usually turned out to be pretty close to "sunny-16"), the rest of the shots turned out nicely exposed: black cars looked black instead of grey. Shooting on snow is another instance where your exposure readings can vary wildly depending on which direction you're pointing, and you really want to just find a good exposure and lock it in. A friend who used to shoot snowboarders for magazines said they always used a 5/50/500 rule when it was sunny: f/5, on ISO50 (he always shot Fuji print film), at 1/500s. If you do the math, I believe that too works out to "sunny-16". --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 0552-0, 12/27/2005 Tested on: 12/27/2005 11:11:11 AM avast! - copyright (c) 1988-2005 ALWIL Software. http://www.avast.com |
#6
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Sports shots with canon 20D
Thanks guys, will give the av setting a go tomorrow, too dark now and
snowing hard. Chris "Roddytoo" wrote in message ... New kit for Xmas, 20D plus 400usm is lens, heavyweight stuff. Having problems with underexposure. Set on sports automatic, which sets the speed of shutter and ISO, shooting in snow at the moment. Any advice? Tried some sports shots yesterday at 1000th second, on tv setting, shots were almost black. They 'lift' with photoshop, but lose the clarity, very noisy / grainy. If I go to a slower lens setting, say 250th, will that help? Just a beginner with this level of equipment. Chris |
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