CEARI C-EOSM 16mm Movie Lens C-Mount Lens Adater Ring + 16mm Macro Adapter for Canon EOS M EF-M Mirrorless Cameras + Microfiber Clean Cloth Allows you easily connect a Movie lens to Canon EOS M EF-M Mirrorless Digital Camera capture vivid images Suitable for All 16mm Movie Lens, CCTV Lens and other C-Mount Lens Compatible with Canon EOS M Series Mirrorless Digital Camera, EOS M1 M2 M3 There is no electrical contacts in the adapter ring. Exposure and focus has to be adjusted manually Automatic diaphragm, auto-focusing, or any other functions will not operated with using this adapter