ALPA Lens Module Nikon F manual, Lens module for Nikon F bayonet (without control for E lenses with electromechanical aperture); a manual aperture lever on the module allows the use of lenses without mechanical aperture ring (type AF-G); can be mounted directly on the ALPA 12 FPS or on conventional ALPA 12 bodies using a 17mm intermediate adapter.
The Nikon F bayonet was first used in June 1959 in the Nikon F, Nikon’s first SLR camera with an interchangeable lens mount. Since then, Nikon has used the same bayonet without making any changes to its basic design. While other manufacturers completely changed their bayonet system in the course of the introduction of new technologies such as autofocus or digital photography, Nikon has focused on continuity and compatibility. In 2012, Nikon announced the production mark of 75 million lenses since launch.
ALPA now enables owners of F bayonet lenses to use many Nikon lenses in a variety of ways. The lens module can be mounted directly on an ALPA 12 FPS. Its built-in focal-plane shutter opens the way for use with almost any digital back. Together with a 17mm intermediate adapter, the lens module can also be mounted on any classic ALPA 12. In this configuration, the digital back must have an electronic shutter.
Nikon F lenses are calculated for use in 35mm (24x36mm). Depending on the focal length, a larger image circle can also be achieved. The lens module thus enables creative, new applications, since any format conditions within the specified image circle or beyond are possible. This allows the photographer to flexibly and creatively select the crop and aspect ratio.