Olympus OM Lens to Canon EOS EF Camera Body Adapter, Brass
This lens mount adapter allows a Olympus OM mount lens to fit on an Canon EOS EF system 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 body.