L M42-AI M42 Thread Lens To AI Mount Metal Stepping Ring

l M42-AI M42 Thread Lens to AI Mount Metal Stepping Ring
Feature
1. Made of high quality metal material, durable to use.
2. Allow lens become a Marco lens on camera body.
3. There is no ROM connection on the ring so diaphragm control of the lens is set manually.
4. M42 to all for NIKON AF mount adapter ring.
5. Suitable for NIKON D5100, D3100, D3300, D90, D80, D700, D300, D3 mount adapter.
Notices
1. Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter.
2. In this case "stop-down mode" will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body.
3. You can shoot with manual mode or aperture priority mode.