【Function】 You can mount M42 Screw Mount SLR Lenses to (EF, EF-S) Mount SLR Cameras; | 【Material】 All-metal design; hardened anodized aluminum construction,matting varnish inside to avoid light reflection; | 【Features】 Supports manual control, manual focus, manual exposure and focus to infinity; Red dot mark, high precision, easy to install and remove; | 【Compatible Cameras 】Compatible for (EF, EF-S) Mount SLR Cameras - Popular models include: 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 | 【Verify Your Lens and Camera Mount】You can find your lens/camera mount in the len's/ camera's original user manual. Or find your lens/camera on the manufacturers' website and under the product specifications look for “mount type”.