Nice shot...but the detail is a function of the lens, not the camera (unless you cropped this out from a larger image?). Maybe you're getting used to actually getting 50mm at 50mm instead of the 1.6ish multplier?
i think the full frame sensor can resolve more detail than my 30d... seems to have more punch as well.... the lens is a sigma 15 30... and its great on the 5d and a bit pants on the 30#!!!
