DxO Labs got their hands on a pre-production Canon 550D for testing. I put up the results against a Canon 7D. The results between the 550D and 7D are almost identical. The 7D slightly beats the 550D in the â€œLow-Lightâ€ category.Â For the other categories the differences were nominal.
Click Here For The Comparison Chart.
DxO Labs recently published the sensor test results for the Canon EOS 7D, the Nikon D300s, and D3000. The Nikon D300s beat out the Canon 7D by a slim margin. The Nikon D3000 performed slightly less than the Canon 7D overall.
Click Here for the Comparison Link.