EF to E Mount Adapter / EF to FE Adapter, allows Cannon EOS EF Lens to fit on E-Mount Mirrorless Camera Body. Infinity Focus Guaranteed. Copper Lens Mount, Solid and Durable 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 As EF EFS Mount Lenses do not have a manual Aperture Control ring, the lens will be wide open by default. EF E Adapter, Compatible with Sony a7 a7r a7S II III IV a9 a9II a7c Alpha 1 NEX5T NEX-6 NEX-7 NEX-F3 a3000 a3500 a5000 a5100 a6000 a6300 a6400 a6500 a6600 ZV-E10