Kamerabajonett

Kamerabajonett, or camera bayonet, is a mounting interface used to attach interchangeable lenses to a camera body. A bayonet mount uses matching lugs on the lens and body and relies on a short twist to lock the lens in place. This design allows quick lens changes, precise alignment of the optical axis, and a tight seal against dust and moisture when compared with screw mounts. The mount defines a flange focal distance, the gap from the mount to the sensor, which together with the lug geometry determines which lenses can be used on a given body.

Modern bayonet mounts often include electronic contacts that provide autofocus, aperture control, and data transfer between camera and lens. Some systems are fully automatic with motorized focusing and electronic aperture control; others combine electronic signals with mechanical linkages for aperture or metering. Because each manufacturer designs its own bayonet, lenses from one brand generally do not fit another brand’s bodies without an adapter, and adapters may not preserve all functions such as autofocus or stabilization.

Historically, bayonet mounts became the standard for interchangeable-lens cameras in the mid-20th century, replacing the earlier screw-thread systems. Notable examples include Nikon F, Canon EF/EF-S, Canon RF, Sony E, Pentax K, and Micro Four Thirds mounts used by Olympus and Panasonic. In practice, the choice of bayonet mount affects lens compatibility, autofocus performance, electronic communication, and the availability of lenses and adapters for a given camera system.