Newby here so forgive my ignorance - I have searched the net and this forum but no luck. I have a 550d and a 270EX II I want to be able to fire the flash off-camera wirelessly. I have an old wireless trigger that fits on the camera's hot shoe but it needs a cable to connect it to the camera and I don't think that's possible with the 550d also I'd like TTL if possible. Any advice gratefully received ... best Roger


