... flash spill, this is the rear-curtain sync function.Compatible with:Compatible camera models: Canon EOS 1100D, 1000D, 600D, ... , 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, ... at 105mm focal length;Illumination coverage: 24-105mm (16mm with diffuse panel), automatically set for lens focal length;Power ...