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Click here to learn more, courtesy of A gauge of motion picture film, 16 millimeters wide from edge to edge, with perforations along one edge and space for a sound track along the other (silent 16mm film has perforations on both sides).
Introduced by Kodak in 1923 as a safe, nonflammable alternative for the amateur and educational (documentary) markets, 16mm film is the gauge most commonly found in the collections of American archives, libraries, and museums.
Used extensively for military training films during World War II, it has 40 frames per foot and one perforation per frame.
Sound 16mm film is shot and projected at a speed of 24 frames per second; silent 16mm at 16 frames per second.
Introduced in 1971, Super 16mm is a negative-only film with a frame area 40 percent greater than regular 16mm, enlarged to 35mm in processing.