Camera back
The camera back is a component in cameras ; a flap or a removable part, which is usually on the side facing away from the lens and provides access to the film and shutter compartment of the camera. The film holder and the winding mechanism are accessible by opening the rear wall, so that films can be inserted and removed. The back of the camera also has a spring-loaded pressure mechanism to press the inserted film into a defined position on the shutter window. The execution of this mechanism is important for the best possible flatness of the film, which ensures the sharpness over the entire image area.
As a component of camera systems , the back wall has gained importance as a removable camera back wall, where a standard back wall can be replaced by one with special functions, such as a long film magazine, a data back wall (for imprinting various information on the film), a control back wall for switching off the film rewind ( e.g. with the Nikon F2 ), or a digital camera back .
Conceptually, the film magazine of medium format cameras is to be distinguished from the rear wall , which is also attached to the camera, but also contains the mechanics for the film holder and the film transport.