M39 Lens EOS R Adapter, M39 Lens EOS RP Adapter, allows Leica M39 39mm LTM L39 Mount Lens to fit on Cannon RF Mount Mirrorless Camera Cameras infinity remains. Adjustable 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. M39 RF Adapter, M39 EOS RF adapter, compatible with Canon EOS R Mirrorless Camera EOS R RP Ra R3 R5 R6 R7 R10