Features:
This adapter helps to use Leica M39 L39 Lens on Sony E-Mount Camera Body
Color:Black
Allows focus infinity.
There is no ROM connection on the ring,so diaphragm control of the lens is set manually
Made of brass and aluminum.

Note:
Please set your camera to the mode of " release shutter without lens" when using this lens adapter,or there will come out of the warning"No lens attached".

Please note Although the lens will fit physically, automatic diaphragm, auto-focusing, or some other functions will not operate correctly while using this adapter.

Adapting APS-frame lens to full-frame camera, it may generate vignetting, some cameras could correct it by adjust APSC

Adapting full-frame lens to APS-frame camera (i.e: large format to medium format, medium format to 35mm, 35mm to micro 4/3) provides excellent edge-to-edge sharpness.
The smaller image field helps minimize the effects of lens distortion and aberration by using the 'sweet spot' or center of the larger lens image circle. and it will magnify the focal length by 1.6 on Canon, 1.5 on Nikon and Sony, 2.0 on M4/3 camera

If your lens does not have a manual aperture control ring, it will stop down to its smallest f/stop by default

Package Includes:
1X Lens Mount adapter ring