The unit is compatible with the 1D C, 1D X, 1D Mk IV, 5D Mk III/II, 7D, 6D, 70D, 60D, T5i, T4i, T3i, T2i, and T1i, and with all Canon, Sigma, and Tamron autofocus lenses. it worked as it should but I went to a BMCC 2.5 K weeks later so never used it.
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