Camera Adapter Ring Tube with Af Confirm Chip Metal Electronic for Hasselblad (Hb) Lens C, Cf, Cfi, CFE on Canon EOS Cameras Such As: Canon EOS 1d, 1ds, 1d Mark Ii, 1ds Mark Ii, 1d Mark Ii N, 1d Mark Iii, 1ds Mark III Canon EOS 7d, 5d Mark Ii, 5d Canon EOS 60d, 50d, 40d, 30d, 20d, 10d Canon EOS 600d, 550d, 500d, 450d, 400d, 350d, 300d Canon EOS 1100d, 1000d Other Canon Film EOS Cameras