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Message: <blockquote data-quote="WayneF" data-source="post: 216544" data-attributes="member: 12496">It is not quite the same thing afterwards.   The camera chips do much of it with analog amplification before the A/D digital conversion.   After A/D, it is much more locked in.   Sure, we can do a certain limited amount after, a stop or two if Raw (with more than 8 bits), but noise becomes a much bigger problem after, I suppose because digital has definite "ends" on the data range.But the idea of what's happening is about the same thing, before or after.</blockquote>