M42-AI M42 Thread Lens to AI Mount Metal Adapter Stepping Ring Filter-Battery Grip 3 minutes intelligent sleep

3 minutes intelligent sleep

for example mobile / MID / TV

It can be matched with professional tripod

5) Serial RS232 DSUB connection

M42-AI M42 Thread Lens to AI Mount Metal Adapter Stepping Ring Filter-Battery Grip 3 minutes intelligent sleepFeature 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