« on: April 11, 2013, 02:58:27 PM »
I went from a Rebel T3i to a 7D and then, a few months later, to a 5D iii. Both the 7D and the 5d iii are superior to the Rebel for a lot of reasons. I'd rate the 7D as an extremely good camera and I'd rate the 5d iii as extraordinary. My area of interest is primarily wildlife photography. For that, the lightning fast and extremely accurate autofocus of the 5d iii is a huge asset. I'd never been able to capture birds in flight before purchasing this camera. Now, I can and it's a whole new world for me. The 5d iii has a superior dynamic range to the 7D, that is, it captures both shadows and highlights better than the 7D.
As for full frame vs. crop, well, there are dozens of threads in this forum on the subject. Suffice it to say that I'm able to extract some really good pictures from my 5D iii even when I crop substantially. That's because the 5D iii does an absolutely outstanding job handling noise, much superior to the 7D, in my opinion.