... Cord for Canon OC-E3Specification:1.Maintains all on-camera flash functions (including E-TTL II) for Canon camera ,except for ... , as well as a 1/4” thread3.Compatible shoe-mount flash unit used off-camera at distances up to 0.6mCompatiable with ... and G series cameras, except the 630 and RT cameras.Flash Speedlite:580EX II, 550EX, 540EZ, 480EG, 430EX, 430EZ, 420EX, 420EZ ...