Aps-c Frame and Full Frame

Twenties of the nineteenth century, after Germany production developed the 35mm (36mm × 24mm) Leica film camera for film using, the 35-mm film is also called the "Leica volume", then the world's production made more and more cameras for the 35-mm film shooting, The name "Leica volume" has been unable to adapt, so changed to "35-mm film" according to the width of the film. Until the fifties, in order to distinguish between 35-mm film and 35mm film in bulk for camera use, the code "135" has printed in the film cartridge. Later the 135 film recognized as the 35mm film, the camera used 135 film called the 135 camera.