Abstract / scope
ISO 491 specifies the cutting and perforating dimensions for 35 mm unexposed motion-picture film and 35 mm magnetic film, and the types of perforations used.
Cinématographie — Film cinématographique et magnétique de 35 mm — Dimensions de coupe et de perforation
ISO 491 specifies the cutting and perforating dimensions for 35 mm unexposed motion-picture film and 35 mm magnetic film, and the types of perforations used.