The Vizelex Macro Focusing Helicoid from FotodioX allows a Canon EOS lens to be used as a macro lens with variable magnification ability. It features a leaf spring design to hold the lens tightly to the camera body, ensuring there is no play between the camera and the lens. The helicoid features an all-metal design and a polished surface. Although the lens will fit physically, automatic diaphragm, auto-focusing, and other functions will not operate correctly while using this adapter. Use "stop-down mode" when metering since the lens aperture can not be controlled by the camera. You can shoot with manual mode or aperture priority mode.
Canon 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, and 1000D cameras