im wondering how do people like the lens with rebels, is the viewfinder big enough to manually focus i really want this lens i dont have a camera right now but im trying to decide if i should get a t2i and get this lens or just go all out and get the 7d and skip this lens because i already have a 17-40L and a 50 1.4. I dont want to do to much overlaping lens and the 50 1.4 is already pretty close focal length but i really i can't decide i already had the t2i and sold it and then went to a 50d but didn't like the noise and kind of missed the video and returned it too adorama now i have to decide suggestions please i can't get this out of my mind what to do. 

