Adapter for Pentax PB lens to Canon EOS lens camera body. This adapter allows Olympus OM lens to fit on Canon EOS camera body. Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter. In this case "stop-down mode" will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body. You can shoot with manual mode or aperture priority mode with Canon EOS camera body. Infinity focusing is guaranteed. Compatible lenses Nikon/Nikkor lens: F, non-AI, AI, AIS, AF, AFD. Made of metal.