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OpticalLimits
Sites that specialize in the review of camera lenses and provide an understanding of the quality of these lenses at particular settings. -
Smithsonian Institution Archives - Digitizing Collections
The resource details technical specifications and standards followed by the Smithsonian Institution Archives for the digitization of still images, audiovisual, and video. -
Cambridge in Colour
The site includes tools, tutorials, and other resources that help introduce concepts in general photography. Among the tools it contains is a depth-of-field calculator.