... the rear-curtain sync function.Compatible with:Compatible camera models: Canon EOS 1100D, 1000D, 600D, 550D, 500D, 450D, 400D, 350D, 300D, 60D ... , 50D, 40D, 30D, 20D, 10D, 7D, 5D Mark III, 5D Mark II, 5D ... , 1D Mark III, 1DMark II, Rebel T3i, Rebel T3, Rebel T2i, Rebel T1i, Rebel T, Rebel XSi, Rebel XS, Rebel XTi, Rebel XT, Rebel X, Kiss F, Kiss X50, Kiss ...