Applicable equipment: M42 system lens is compatible with Nikon AI camera body and Film Cameras. Applicable models: M42 lenses and compatible with Nikon F-mount digital SLR cameras Features: Full manual control, manual focus, manual exposure, aperture priority, not able to focus at in/finity. Function: M42 lenses without A-M switches can also use this adapter ring after processing the aperture lever. In/finity focus is not possible. Generally, a 50mm lens will focus at about 2m, and a telephoto lens will focus farther. Note: Manual adapter, no electrical contacts in the adapter ring and cannot achieve auto diaphragm or auto-focus. They have to be controlled manually. Colour Black Material Metal Weight 11g Compatible Brand For Nikon Type.
eBay