processing

photography

Also known as: film processing

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Last updated

July 13, 2026

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Photography is the art and science of capturing and preserving images using light. The most common method, the black-and-white negative-positive system, begins in a camera where a lens projects an image onto light-sensitive film. During development, light-struck silver salts turn into a visible, reversed image called a negative. A fixing bath then removes undeveloped salts, making the negative permanent. To create a positive print, the negative is projected onto photographic paper, which is then developed and fixed, re-creating the original scene's light values. Modern photography also includes sophisticated color processing techniques and digital imaging.1

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motion-picture technology
Film processing and printing
In the early days of motion pictures, films were processed by winding on flat racks and then dipping in tanks of solution. As films became longer, such methods proved to be too cumbersome. It was recognized that the processing system should have…
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In the early days of motion pictures, films were processed by winding on flat racks and then dipping in tanks of solution. As films became longer, such methods proved to be too cumbersome. It was recognized that the processing system should have…
Read More