Well I hate to compare cameras because there always seems to be a trade off ffrom one kind to the other but here goes. I printed the picture below large today, 24x36. It was shot at 100iso 11mm, ND grad, a77
The print itself is as smooth as a babies butt. No jpeg compression, no noise, no artifacts of any kind. The sky has a very pleasent clean look.
My E5 though it makes for great prints they do have some noise even at 100 iso and also artifacts. But you have to get close to see it. But it's there.
The lens was a Sony 11-18mm, not as sharp as my 9-18mm Olympus but not much distortion to correct for. The 11-18mm is sharper in the middle and falls off on the corners. So see there's the trade of.
Bridge, the other side by Cosmonaut's, on Flickr