K&F Concept EF/EF S to NEX Lens Mount Adapter, Manual Adapter for Canon EF and Sony Alpha E Cameras

Allow to mount your Canon EF Mount Lens to E NEX Mount cameras Precision all-metal construction with chrome plated brass mounts for secure and solid fit As Canon’s EOS lenses are electronically controlled, most Canon EF mount lenses do not feature a manual aperture ring, so when used on our EOS lens side adapter, which is a full manual operation adapter ring, the aperture could not be transferred to the camera, it will stop down to its smallest f/stop by default There is no electrical contacts in the adapter ring. Full manual operation, manual focus, manual iris adjustment can be achieved with body manual exposure, aperture priority exposure Allows focus to infinity;full-frame lens to APS-frame camera, it will magnify the focal length by 1.6 on Canon, 1.5 on Nikon and NEX, 2.0 on M4/3 camera,if your lens is a prime lens, pls adjust your distance towards the target