• You can mount Nikon F/AF AI AI-S Lens to Canon EOS EF EF-S Mount Cameras • All-metal design; hardened anodized aluminum construction,matting varnish inside to avoid light reflection • Supports manual control, manual focus, manual exposure and focus to infinity; Red dot mark, high precision, easy to install and remove • 1d/1ds, Mark II, III, IV, X, C, 5D, 5D Mark II/III 7D, 10D, 20D, 30D, 40D, 50D, 60D, 60Da, Rebel xt, xti, xs, xsi, t1i, T2i, T3, T3i, T4, 300D, 350D, 400D, 450D, 500D, 550D, 1000D. • When using the adapter ring for the first time, please turn on the option "Release the shutter without lens" in the fuselage menu, otherwise the lens will not be recognized and the shutter cannot be taken to take pictures.