Camera Adapter Ring Tube Lens Adapter Ring for Olympus OM Mount Lens to Canon EOS EF Mount Camera Adapter Fits Canon EOS 100D 350D 450D 500D 600D 650D 700D 750D 760D 1000D 1100D 1200D 10D 20D 30D 40D 50D 60D 70D 1D 1D Mark II 1D Mark III 1D Mark IV 1Ds 1Ds Mark II 1Ds Mark III 1DX 5D 5D Mark II 5D Mark III 5DS 5DS R 6D 7D 7D Mark II Cameras