"Super 8mm film is a motion picture film format released in 1965 by Eastman Kodak as an improvement over the older "Double" or "Regular" 8 mm ...
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home movie format.
The film is nominally 8mm wide, the same as older formatted 8mm film, but the dimensions of the rectangular perforations along one edge are smaller, which allows for a greater exposed area. The Super 8 standard also allocates the border opposite the perforations for an oxide stripe upon which sound can be magnetically recorded.
Unlike Super 35 (which is generally compatible with standard 35mm equipment), the film stock used for Super 8 is not compatible with standard 8 mm film cameras." - (en.wikipedia.org 02.07.2021)
