I currently have an XTi , and I want to switch to a 7D + 15-85 IS very soon, and keep my XTi + 50mm F/1.8 as a backup. However I've read that the IQ is almost the same; is this true ? Thanks!
P.S: I don't like my XTi at 800 or 1600 ISO. At all.
Edit: Thanks for taking the time to read me and thanks for the help!