35-mm (standard film, miniature film, KB-film) is a film format in which the film strip 35 mm wide. Originally used exclusively for the capture of moving images (movies), it was later discovered as a practical photo size. First small-screen camera was the Leica Leitz. The small-format photography has quickly become established, especially in the field of photojournalism, these are for the most commonly used in photography film format in the packaging than 135. Meanwhile, the once-dominant 35-mm format digital production methods in the still photography has been largely replaced, and the movie is now the majority of digital cameras sold and uses the format without film.
Similar to the film strip roll film on a plastic (previously metal) coil is wound, but then packaged in a light-tight sheet cartridge. Until the 1950s, the self-assembly of such film cartridges of 35 mm per meter was quite common. The film cartridge is inserted directly into the miniature camera. In the early days of camera technology to thread the film leader protruding from the cartridge to the take-up spool of the camera and inserting the film itself was a - depending on the make - sometimes even difficult matter. Apart from a few manufacturers were soon developed solutions and disseminate this also allowed with little patience and dexterity satisfactorily and safely. In 1967, the PL system (Pentacon Loading) for Praktica cameras were introduced. Today, miniature cameras do with motorized film transport usually threading automatically.
Separate removable film magazines, which are common in medium-format cameras, it is only in exceptional cases. Some manufacturers offer but for a few so-called long professional SLR film magazines with a supply of 100 or even 250 images, which are attached instead of the normal camera back.