Lens connection
The lens mount allows the attachment of an exchange lens on a camera body .
mechanics
Different systems are in use:
- Rectangular plate
The historically first and simplest lens mount were lenses that were pushed onto the box-shaped camera housing on a rectangular plate. -
Lens
threads Fastening threads are still common today. The objective threads M39 , M40 , M42 and the T2 connection should be mentioned here in particular . Since Kyocera left the mass market for cameras with its Contax and Yashica brands in 2005 , lenses with M42 threads have again been offered as new products from Carl Zeiss . In the commercial sector, especially with digital industrial and surveillance cameras, there are usually the C-Mount and the CS-Mount , both of which are also screw connections. -
Lens bayonet
Most interchangeable lenses today have a bayonet lock . A distinction is made between two variants: on the one hand, metallic noses arranged around the rear end of the lens body engage in corresponding recesses on the flange ring of the camera housing; the second variant has the noses on the camera and the flange ring on the lens. The locks are set in place with a plug-and-turn movement.
Some bayonet systems ( Nikon F , Pentax K , Micro Four Thirds (MFT) , EF bayonet ) are supported by several manufacturers, otherwise they are manufacturer-specific.
Lens with noses
Lens with cutouts
Data transfer
Modern lens connections contain several electrical contacts to transmit information (to the camera) and control commands (to the lens).
Web links
Commons : Lens mounts - collection of images, videos, and audio files
