Ruud, Thanks for the link. dpreview does an excellent job! This was the review that made me decide to not upgrade from my 50D to a 7D. But, after a closer look, you are quite correct. The noise difference is significant. For those shooting hand held in low light, the improvement above about ISO 2500 is huge. There's less improvement in the ISO 100-2500 region where I usually shoot, but it's still considerable and enough to make me re-think my plan to wait for the Canon 5D Mk III (which I expect will come out later this year). Also, the 5D demands L lenses. The 7D can make good use of L lenses too, but I think isn't held back much by the better EF-S lenses.