Photography in the United States product introduced by George Eastman in 1884: a flexible, gelatin-coated paper, followed closely by a holder for a 24-frame roll. Soon after this, Eastman introduced Eastman American film, which featured a thin gelatin layer that was removed from the paper backing after development for additional clarity in making prints. In 1888, Eastman's company issued the first easy-to-use, lightweight Kodak camera. It was priced at $25, loaded with a hundred frames, and was almost instantly popular. When the user had used up all 100 exposures, he or she would simply mail the camera back to Kodak, where the used film was
Robot (camera) 24 × 24 mm image format, but many used 18 × 24 mm (half-frame) and 24 × 36 mm (standard Leica format), and non-standard formats such as 6 × 24 mm (Recorder 6), 12 × 24 mm (Recorder 12) and 16 × 16 mm (Robot SC). Around 1930 Heinz Kilfitt, a trained watchmaker, designed a new 35 mm film compact camera using a 24×24 mm frame format (instead of the Leica 24×36 mm or cine 18×24 mm formats). The 24×24mm square frame provided many advantages, including allowing over 50 exposures per standard roll of Leica film instead of 36. Kodak