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#1
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controlling exposure of snow
hey guys...
I been to niagara falls recently....it was awesome trip...but the area was full of snow. I took plenty of snaps, majority of them having snow. But i saw that all snaps wer over-exposed due to excessive reflection of light from snow. Because of that other objects in the photo wer dark or under-exposed. I had PS camera that time (olympus) cud someone pls gimme some tips on how to avoid such things in the future thnx |
#2
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controlling exposure of snow
CIVILian wrote:
hey guys... I been to niagara falls recently....it was awesome trip...but the area was full of snow. I took plenty of snaps, majority of them having snow. But i saw that all snaps wer over-exposed due to excessive reflection of light from snow. Because of that other objects in the photo wer dark or under-exposed. I had PS camera that time (olympus) cud someone pls gimme some tips on how to avoid such things in the future thnx If your camera has "exposure compensation", then to expose correctly for snow (or a sandy beach) you would have to dial it back by a couple of stops. Generally -2 EV (compensation set to -2) is used on sand or snow to under-expose compared to what the camera's meter is telling it that it's settings should be. Considering that it's digital that you're using, try it out a couple of times (changing the compensation up and down) to see what effect it has. |
#3
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controlling exposure of snow
On Mar 21, 9:36*am, dj_nme wrote:
CIVILian wrote: hey guys... I been to niagara falls recently....it was awesome trip...but the area was full of snow. I took plenty of snaps, majority of them having snow. But i saw that all snaps wer over-exposed due to excessive reflection of light from snow. Because of that other objects in the photo wer dark or under-exposed. I had PS camera that time (olympus) cud someone pls gimme some tips on how to avoid such things in the future thnx If your camera has "exposure compensation", then to expose correctly for snow (or a sandy beach) you would have to dial it back by a couple of stops. Generally -2 EV (compensation set to -2) is used on sand or snow to under-expose compared to what the camera's meter is telling it that it's settings should be. What?! That is exactly the *opposite* of what one "generally" should do in highly "backlit" or high-key situations like snow or sand scenes. -- YOP... |
#4
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controlling exposure of snow
In message
, Nervous Nick writes If your camera has "exposure compensation", then to expose correctly for snow (or a sandy beach) you would have to dial it back by a couple of stops. Generally -2 EV (compensation set to -2) is used on sand or snow to under-expose compared to what the camera's meter is telling it that it's settings should be. What?! That is exactly the *opposite* of what one "generally" should do in highly "backlit" or high-key situations like snow or sand scenes. -- Correct - over expose for snow. See: http://www.kenrockwell.com/tech/snow.htm Regards, -- Neil |
#6
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controlling exposure of snow
"CIVILian" wrote in message ... hey guys... I been to niagara falls recently....it was awesome trip...but the area was full of snow. I took plenty of snaps, majority of them having snow. But i saw that all snaps wer over-exposed due to excessive reflection of light from snow. Because of that other objects in the photo wer dark or under-exposed. I had PS camera that time (olympus) cud someone pls gimme some tips on how to avoid such things in the future thnx I think you may have things backwards. Snow will normally be underexposed by the camera due to the light reflecting off the snow. You say your pictures are overexposed with other objects in the photo being underexposed. Is it possible that you were trying to photograph the dark objects with the snow in the background, because that would make the snow overexposed. You don't mention wether you are shooting film or digital. The problem is that the camera or film is unable to capture the range of llight that the human eye can see. You have to either expose for the snow and let the dark objects be darker or expose for the dark objects and let the snow be blown out. If you give more info on what camera you have and post some pictures to show what you are talking about I'm sure someone can give you more specific advice. |
#7
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controlling exposure of snow
"CIVILian" wrote in message ... hey guys... I been to niagara falls recently....it was awesome trip...but the area was full of snow. I took plenty of snaps, majority of them having snow. But i saw that all snaps wer over-exposed due to excessive reflection of light from snow. Because of that other objects in the photo wer dark or under-exposed. I had PS camera that time (olympus) cud someone pls gimme some tips on how to avoid such things in the future thnx Hi. You should have used your "review" LCD to check the results while taking the pictures. You would them have had a chance of trying to do something to correct the obviously incorrect exposure being given by the camera meter. I don't know what controls you have on your camera to vary the exposure, so I can't be specific, but I would expect that your user manual would have some suggestions for "Snow" scenes. Roy G |
#8
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controlling exposure of snow
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#9
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controlling exposure of snow
"CIVILian" wrote in message ... hey guys... I been to niagara falls recently....it was awesome trip...but the area was full of snow. I took plenty of snaps, majority of them having snow. But i saw that all snaps wer over-exposed due to excessive reflection of light from snow. Because of that other objects in the photo wer dark or under-exposed. I had PS camera that time (olympus) cud someone pls gimme some tips on how to avoid such things in the future thnx 86 the Oly, get Nikon. Problem solved. -- Focus |
#10
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controlling exposure of snow
On Mar 22, 2:32 am, Bert Hyman wrote:
(Nervous Nick) wrote : On Mar 21, 9:36 am, dj_nme wrote: If your camera has "exposure compensation", then to expose correctly for snow (or a sandy beach) you would have to dial it back by a couple of stops. Generally -2 EV (compensation set to -2) is used on sand or snow to under-expose compared to what the camera's meter is telling it that it's settings should be. What?! That is exactly the *opposite* of what one "generally" should do in highly "backlit" or high-key situations like snow or sand scenes. Well, he did say "to expose correctly for snow". Maybe that's exactly what he meant: correctly exposed snow. -- Bert Hyman That doesn't help... Snow is a fairly bright white, iirc... (O: So to 'correctly' expose it should appear NOT as a neutral grey, but as a fairly bright white (hopefully not so bright as to lose the detail), eg around zones 7-9 if you are into that sort of thing. That is actually 2-4 stops above neutral grey, so even a +2 stop ev adjustment may be a bit short. Getting back to the op's issue, the advice to overexpose by 1-3 stops is correct, depending on the subject matter, but there are several complications... 1. Some cameras use a 'scene recognition' algorithm to recognise scenes which probably need over exposure (sand, snow..) or underexposure (night shots..) - so there may already be some compensation going on. And is it (can it use) averaging, centre- weighted or spot metering? 2. Out of the box, many cameras are set with high contrast levels - if it is adjustable, then in this environment it should be set towards the minimum. 3. Even the best cameras will struggle with the contrast range in a snow scene, as digital sensors and film are not able to cope with extremes of light and dark in one scene. So drop the contrast setting if the camera has one. Then experiment with ev adjustments to find out what your camera is capable of and what gives the best results. And if possible, bracket like crazy or use HDR techniques. |
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