High Quality Content by WIKIPEDIA articles! 120 is a film format for still photography introduced by Kodak for their Brownie No. 2 in 1901. It was originally intended for amateur photography but was later superseded in this role by 135 film. Along with its close relative, 220 film, 120 film survives to this day as the only medium format films that are readily available to both professionals and amateur enthusiasts. The 120 format is typical of roll film. The spool was originally made of wood with metal flanges, later all metal, and finally plastic. The film is at least 30 inches (76 cm) long, up to 32–33 inches (81–84 cm), attached to a piece of backing paper longer and slightly wider than the film. The backing paper protects the film while it is wound on the spool, with enough extra length to allow loading and unloading the roll in daylight without exposing any of the film. Frame number markings for the three standard image formats (6x4.5, 6x6, and 6x9; see below) are printed on the backing paper.

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