I am going to start getting into wedding and baptism and was wondering if my 7D is up for it as I think it should do great, but I have been reading that the 5D Mark II is better at IQ and was wondering at what size prints that would be? I think most of my prints would be at the A3 size and I would find it hard to believe that you would see a difference there and if you do then I would buy the 5D and have my 7D as a back up, but if not I would much rather buy something like a 550D as a back up to my 7D just in case, thanks

