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
Twin-lens reflex camera roll film with square 4×4 cm images, most famous the "Baby" Rolleiflex and the Yashica 44. The TLR design was also popular in the 1950s for inexpensive fixed focus cameras such as the Kodak Duaflex and Argus 75. Though most used medium format film, a few 35mm TLRs were made, the very expensive Contaflex TLR being the most elaborate, with interchangeable lenses and removable backs. The LOMO Lubitel 166+, a natively medium format camera, comes with an adapter for 35mm film. The only twin lens reflex camera that uses instant film is Instantflex TL70 manufactured by MiNT Camera which is