...but were not really comparing apples and apples. Sure, ISO 100 in camera "A" should theoretically be the same as ISO in camera "B." I know it's a standard. His question was why can one camera expose correctly at 100 ISO, and under all else the same conditions camera B needs to do it at 200 ISO. For starters, we really only have half the facts...was camera "B" a full frame sensor?...and if it was, full frame sensors have larger pixels jammed into their substrate making them more sensitive to capture available light.
Last edited by autofocus; 04-13-2009 at 09:32 PM.
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