Features：
1. Made of aluminum
2. Focus infinity.
3. No electronic connection.
4. Supports manual control, manual focus, manual exposure.
5. Avoid reflecting of light.
6. Super smooth surface finishing.
7. Install, remove and operate lens smoothly.
8. Set your camera to "shooting without lens" mode.
9. An optical ir-correction lens is equipped with in the middle of the lens mount adapter

NOTICE:
Using this adapter, most functions such as automatic diaphragm, auto-focusing, or other functions will not operate.
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.
You can shoot with manual mode or aperture priority mode.