1. Mounts Canon FD FL 35mm SLR lenses to Canon EOS (EF, EFS) Mount SLR Cameras; infinity focus or beyond guaranteed 2. Builtin multicoated focusing correction lens. Supports manual control, manual focus, manual exposure. 3. Please note: It is not same between Canon FD mount and EF mount, this fd to ef adapter ring is only for Canon FD mount lens. 4. Compatible Cameras (including, but not limited to): EOS 10D, 20D, 20Da, 30D, 40D, 50D, 60D, 60Da, 70D, 80D, 90D, EOS 5D/II/III/IV, 5DS/R, 6D/II, 7D/II, 1D/II/IIN/III/IV, 1Ds/II/III, 1D C, 1D X/II, EOS Rebel, XT, XS, T1iT7i, SL1, SL2, SL3, Blackmagic Pocket Cinema Camera 6K (Canon EF), Z CAM E2S6 Super 35 6K, E2F6 FullFrame 6K,E2F8 FullFrame 8K Cinema Cameras.Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.