Digital describes information stored as numbers, in binary code made of ones and zeros. In digital photography, a sensor turns light into electrical signals, and these are converted into numbers that describe each pixel. The image can then be copied, edited and shared without loss.
The move from film to digital changed how photographs are made, stored and seen. It also started debates. Because digital images are easy to change, some critics ask whether photography is still a separate medium, and how much we can trust photographs as evidence.
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