Description:This brand new aluminium adapter rings is suitable for M42 to all Minolta & SONA Alpha lens mount. And the smooth interface will not only protect your camera and lens, but also ensure the safety and solidity of the lens transfer. Furthermore, the M42 screw will screw tightly to make no loose and smoothly without stuck.Features:M42 to all Minolta AF & SONY Alpha mount adapter ring.Make M42 mount lenses (Zeiss, Pentax, Praktica, Mamiya, Zenit) can be used on Minolta AF & SONY Alpha cameras. There is no ROM connection on the ring so diaphragm control of the lens is set manually.It is possible to use Macro rings and other accessories.Brand new, never used.Made of aluminum. Specifications:Color:BlackSuitable: For Minolta AF & SONY Alpha DSLR(as long as the body takes Minolta AF & SONY Alpha lens)Notes:Although the lens will fit physically, automatic diaphragm, auto-focusing,or any other functions will not operate correctly while using this adapter.In this case "stop-down mode" will need to be used when metering sincethe lens does not have the ability to have its aperture controlled by the camera body.You can shoot with manual mode or aperture priority mode .Package List:1 * Lens Mount Adapter