35 mm film

35 mm film is the film gauge most commonly used for chemical still photography (see 135 film) and motion pictures. The name of the gauge refers to the width of the photographic film, which consists of strips 1.377 ±0.001 inches (34.98 ±0.03 mm) wide. The standard negative pulldown for movies ("single-frame" format) is four perforations per frame along both edges, which results in 16 frames per foot of film. For still photography, the standard fra... More

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