The Canon EP-EX15II is compatible with EOS 6D Mark II, 80D, 100D, 200D, 450D, 500D, 550D, 600D, 650D, 700D, 750D, 760D, 1000D, 1100D, 1200D, 1300D. Neither the Mark I nor Mark II versions is compatible with the EOS 5D Mark III, or the EOS 7D- or 1D-series.
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