Fotodiox Lens Mount Adapter with Dandelion AF Focus Confirmation Chip, Leica R lens to Canon EOS Camera adapter, fits Canon EOS 1d,1ds,Mark II, III, IV, 5D, MarK II, 7D, 10D, 20D, 30D, 40D, 50D, 60D, Digital Rebel xt, xti, xs, xsi, t1i, t2i,t3, t3i,300D, 350D, 400D, 450D, 500D, 550D, 600D, 1100D,1000D, Leica R lens includes R, Rom, One-cam, two-cam, and three-cam lenses

Premium Grade Fotodiox AdapterAdapter with built-in Focusing Confirmation ChipInfinity Focus GuaranteedBrass Construction24 Month Manufacture

Source: Digital Camera and Video Store...