Description

Pentax-M series bellows are old 1970s pieces of beautifully crafted equipment that still give an excellent performance almost 50 years later.

In photography, a bellows is the accordion-like, pleated expandable part of a camera, usually a large or medium format camera, to allow the lens to be moved with respect to the focal plane for focusing. Bellows are also used on enlargers. The bellows provide a flexible, dark extension between the film plane and the lens.

In some cameras, the photographer can change the angle of the film plate with respect to the lens’s optical axis, providing alterations of perspective distortion and of the object plane of focus. Bellows may be part of a camera or come as an optional accessory.