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How Digital Photography Works, Second Edition by Ron White

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Chapter 5. How Digital Exposure Sifts, Measures, and Slices Light

How Digital Exposure Sifts, Measures, and Slices Light

Every time you go to a different place it’s lit differently.

Annie Leibovitz

All photography is about light. Photos may be of important or trivial subjects, in color, or black and white. A picture may be as candid as the next minute’s news or a painstaking pose, a slice of reality or a helping of the abstract. It can be still or moving, invoking weighty subjects or the flightiest of fancies. But whatever else photographs are, they are about light.

They are about what light does when it flickers off a river, when it exposes the wrinkles and buried veins of age, how it transforms a sky, ...

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