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ISO 3645:1984
Cinematography -- Image area produced by 8 mm Type S motion-picture camera aperture and maximum projectable image area -- Positions and dimensions
This International Standard specifies, for 8 mm Type S cameras and projectors, the dimensions of the image area produced by the camera on the film and the maximum projectable image area as well as the image positions relative to the reference edge-of the film, and the perforations used to posi-tion the images.
International Organization for Standardization [iso]