Canon EOS 5D Mark II Review – Mike Perlman:
Following the legacy left by the Canon EOS 5D, the EOS 5D Mark II was not only a still frame-capturing champion, but its HD video quality was out of this world. For a 21-megapixel camera, we were surprised with the level of detail exhibited by the Canon EOS 5D Mark II, as well as its ability to make excellent use of available light. Noise was never an issue in nearly every shooting environment and fringing was almost nonexistent. The only time we encountered moderate amounts of noise was at night when we shot with higher ISO levels. However, even our images captured at ISO 3200 exhibited minimal amounts of noise, and the fact that we could size them down from 21-megapixels meant we wouldn't be able to notice the noise anyway.
Mike gave the 5DM2 a rating score of 89% (VERY GOOD).
At the end of the review are links to full-resolution sample images.
There's also a sample movie / video clip (view in HD on YouTube).