126-film Here

: Unlike standard 35mm film, which has continuous perforations, 126 film has only one registration hole per frame .

: The film is encased in a plastic cartridge with a paper backing that displays the current frame number through a small window on the back of the camera. 126-film

: Some higher-end cameras used a square notch on the top edge of the cartridge to automatically detect the film's ISO speed. Historical Significance and Decline 126 Film & Using 35mm in 126 Cameras : Unlike standard 35mm film, which has continuous

126 film is a cartridge-based photographic film format introduced by Kodak in 1963. It was designed to simplify photography for casual users by eliminating the need to manually thread and wind film, which was a common difficulty with standard 35mm formats. Historical Significance and Decline 126 Film & Using