Bit Depth, Signal-to-Noise Ratios, and How It Relates to Exposure

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It seems a lot of people – even professional photographers – don’t have a good understanding of bit depth as it relates to developing an image for the web.  I got in the middle of a discussion today about the ability to bring up underexposed areas of an image, and in trying to explain it I couldn’t really find a comprehensive explanation that discusses all the elements that go through my head when I’m processing images, so I decided I’d try to make one.

I don’t consider myself an expert on digital imaging, but I believe to truly understand something you…

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