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Photo Forum / Photo Technique / Nature Photography / March 2005bird photos on cloudy day
When taking photos of birds in flight or perched with open sky as background, does shooting on a cloudy day reduce the chances of unmanagable chromatic aberration as opposed to a bright sunny day? > When taking photos of birds in flight or perched with open sky as > background, does shooting on a cloudy day reduce the chances of > unmanagable chromatic aberration as opposed to a bright sunny day? It probably will, however birds against clouds don't look anywhere near as good as against a nice blue sky. Try shooting early in the morning or late in the afternoon, and I would also try shooting with a polarising filter and warming filter combo. Mick Brown www.photo.net/photos/mlbrown > When taking photos of birds in flight or perched with open sky as > background, does shooting on a cloudy day reduce the chances of > unmanagable chromatic aberration as opposed to a bright sunny day? Chromatic aberration is in the lens, not the environment. Better lenses have little or none. >>When taking photos of birds in flight or perched with open sky as >>background, does shooting on a cloudy day reduce the chances of >>unmanagable chromatic aberration as opposed to a bright sunny day? > > Chromatic aberration is in the lens, not the environment. Better lenses > have little or none. A deep blue sky is pretty dark. A cloudy sky is white so much more contrast & more noticeable CA, I would guess. Definitely more purple fringing on a digicam. >> Chromatic aberration is in the lens, not the environment. Better lenses >> have little or none. > >A deep blue sky is pretty dark. A cloudy sky is white so much more >contrast & more noticeable CA, I would guess. Definitely more purple >fringing on a digicam. I live in Oregon and many cloudy days are very much grayer than white. The contrast between a perched bird and its background is not as pronounced as on sunny days or on days with bright white clouds as background. The color on the bird doesn't pop as much as on brighter days but the softer contrast seems to produce better edge effects. I'm using a Canon L lens telephoto so I think the effects aren't inherently in the lens. >I live in Oregon and many cloudy days are very much grayer than white. >The contrast between a perched bird and its background is not as >pronounced as on sunny days or on days with bright white clouds as >background. That's only possible if your backdrop is the underside or side of a dark cloud, but it is sunnier where the bird is. With homogenous cloud cover, the sky is always much brighter than a grey card mounted on a tree branch.  Signature<>>< ><<> ><<> <>>< ><<> <>>< <>>< ><<> John P Sheehy <JPS@no.komm> ><<> <>>< <>>< ><<> <>>< ><<> ><<> <>>< >A deep blue sky is pretty dark. A cloudy sky is white so much more >contrast & more noticeable CA, I would guess. Definitely more purple >fringing on a digicam. Agreed, except to note that purple fringing and CA are two completely different things. CA happens in the lens; purple fringing is a logistical bug in the demosaicing process, triggered by photosite leakage (colored light is assumed because of the filters over the cells, but is actually leakage that occurs *under* the filters). Signature<>>< ><<> ><<> <>>< ><<> <>>< <>>< ><<> John P Sheehy <JPS@no.komm> ><<> <>>< <>>< ><<> <>>< ><<> ><<> <>>< >>When taking photos of birds in flight or perched with open sky as >>background, does shooting on a cloudy day reduce the chances of >>unmanagable chromatic aberration as opposed to a bright sunny day? > > Chromatic aberration is in the lens, not the environment. Better lenses > have little or none. Actually, Michael has a point. Does the OP really mean Flare or Chromatic Aberration? Francis A. Miniter >Actually, Michael has a point. Does the OP really mean Flare or Chromatic >Aberration? > >Francis A. Miniter I probably mean flare because what I see many times doesn't arise from the lens. I'm using Canon L glass and I think it's clean. Thanks to all for your comments. Dale >Chromatic aberration is in the lens, not the environment. Better lenses >have little or none. The higher the contrast of edges, the more easily you can see CA. A bird silouetted against a cloudy sky is one of the most high-contrast situations you're going to run into. My general rule is that I shoot birds against the sky on sunny days, and on cloudy days, I try to shoot low birds with vegetation or the ground as background, whenever possible. Signature<>>< ><<> ><<> <>>< ><<> <>>< <>>< ><<> John P Sheehy <JPS@no.komm> ><<> <>>< <>>< ><<> <>>< ><<> ><<> <>>< |
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