You can take your chances but i have a friend who used some nikon flash on his rebel xt and it like short circuted a year after when he thought it was working fine. The interface is different and i say always be safe and go with canon. I have a sigma flash and its just not the same as far as connecting with the camera goes. The communication between them is not the best so there could be problems and it might not work as efficiently as you will hope. Hope that helps i do not know much more than to be safe and go with canon or another reccomended flash.