Pixel 3.6M /10 FEET E-TTL Off-Camera Shoe Cord for Canon DSLR Flash 580EX II 550EX Canon 430EX II Canon 420EX 380EX replaces OC-E3b High Quality flash E-TTL Off-Camera Shoe Cord for Canon DSLR and Flashes replace OC-E3b t can be used as far as approximately 3.6 meters/ 10 feet away from the camera, more flexible!!! This cord provides E-TTL II / E-TTL and traditional for Canon Speedlites when used off-camera with Canon SLR/DSLR cameras, all automatic functions of the EOS cameras are retained. It is fully compatible with Canon ex/ez series speedlites and EOS cameras, for Canon DSLR EOS 1Ds, EOS 1Ds Mark II III, 10D, 20D, 30D, 40D, 50D, 5D, 7D, Digital Rebel (300D), Rebel XT (350D), Rebel XTi (400D), Rebel XS (1000D) & Rebel XSi (450D) 500D, etc Make sure you install the cable correctly (refer to product pictures) / Compatible with Canon Speedlights and other brand Canon fit flashguns.