Nikon AI/AF Lens to Canon EOS EF Mount Adapter Ring 7D 5D 50D 60D 450D 550D T2I by MECO It is a Nikon AI/AF all Canon EOS mount adapter ring It is easy to install, remove and use It is durable and reliable for long-term use A useful thing to achieve optimal shooting effect Allows focusing to infinity. Auto focus (AF) is not available. Lens lock / release and stop screw. Stop-down metering is used. Spot metering mode does not work properly. Compatible: ALL Canon and Film SLR (as long as the body takes Canon EOS lens) Nikon AI Lens