Slot-in film cartridges, 1960s and 1970s.

It was Kodak's introduction in the 1960s and 1970s of slot-in film cartridges, first the 126 Instamatic (1963), then the miniature 110 format Pocket Instamatic (1972), that brought colour photography to the snapshooter. These films and the cameras designed to use them were so easy to use that colour photography was no longer difficult; the photographer simply dropped the cartridge into the camera, shut the back and began taking pictures. Once finished, the cartridge could be plucked out and sent off for procesing.