6D Digital Picture samples

"The Canon EOS 5D II is the camera that a lot of us have been waiting to compare the 6D to. In these results, it is not hard to see that the 6D indeed improves upon the long-time favorite. Up through ISO 400, it will be hard to see any difference in real-life results, but I start to see some 6D advantages starting at around ISO 800. The 6D advantage builds as the ISO setting increases. The difference becomes rather easy to see at ISO 3200 and the 6D's lead continues building until it leaves the 5D II in the dust at ISO 51200."

http://www.the-digital-picture.com/Reviews/Canon-EOS-6D-Digital-SLR-Camera-Review.aspx