technology of photography: Quick Facts

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Diagram showing the negative-positive photographic process: a scene is captured on film in a camera, developed into a negative, projected onto paper with an enlarger, and developed again to produce a positive print.

single-lens reflex principle

twin-lens reflex camera

using lenses of different focal lengths

characteristic curves of low-contrast and high-contrast film

A Venn diagram shows the three primary colors of light-green, blue, and red-as overlapping circles. Their intersections create cyan, magenta, yellow, and white at the center, illustrating additive color mixing.

Diagram showing the subtractive primary colors of pigments: yellow, cyan, and magenta as overlapping rectangles, with secondary colors green, red, and blue where they intersect, and black at the center where all three overlap.

colour reproduction sequence with subtractive reversal film

A person in glasses examines a strip of film in a darkroom. Overlaid text reads "What's the point of film photography?" with "film photography?" highlighted in blue.

Frank Sadorus: Photographing Life on the Illinois Plains

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