Replacement for ---- T-Ring Adapter is suitable for all T / T2 mount devices such as microscopes, telescopes and T-mount lenses. Replacement for DSLR, replacement for 1D, 1Ds Mark II III, 5D, 5D Mark II, 5D Mark III, 5D, 5DR, 6D, 7D, 7DII, 10D, 20D, 30D, 40D, 50D, 60D, 70D , 77D, 8 Rebel t1i, xt, xti, xs, xsi, 300D, 350D, 400D, 450D, 500D, 600D, 650D, 700D, 750D, 760D, 800D, 1000D, 1120D). Easy to set up ---- T Ring Adapter Mount is easy to set up. Put the red adapter mark and the lens ring together. Turn the adapter counter-clockwise to the fixed point. It uses manual or AV mode. Excellent performance ---- T-Ring Adapter can focus at infinity, no auto focus, M42 * 0.75 thread adjustment. After turning off the camera, install / uninstall the adapter. Perfect Replacement ---- T Mount Lens Adapter Ring is easy to use and install, without complicated modifications, direct replacement of the old or broken one, it is your great replacement. High quality ---- T Ring Adapter Mount is made of aluminum alloy, which is and rustproof, good corrosion resistance, excellent mechanical properties, high strength, maximum durability, strong stability and good reliability