Canon T1i / 500D vs Nikon D5000 vs Olympus E-620 vs Panasonic G1 Noise Comparison at DPReview – The E-620 and Lumix DMC-G1 don't perform as well as the bigger-sensor cameras here, namely, the D5000 and EOS Rebel T1i / 500D / Kiss X3.
Nikon D5000 Reviews
Nikon D5000 vs Olympus E-620 RAW Image Quality Comparison at DPReview – The D5000 wins on detail captured.
Full-sized samples, video clips and review of the Nikon D5000 at The Imaging Resource – The verdict for the D5000:
What's certain is the Nikon D5000's ability to make superb still images. Its optical viewfinder is a pleasure to use, and you'll get more straight horizon lines thanks to the built-in grid. The shutter sound is quiet, and single-point AF speeds are fast. For the consumer shooter wanting to move up in terms of functionality and image quality, and still have the familiar interface of the D40/D60 range, the Nikon D5000 is an excellent choice, and a definite Dave's Pick.
Full-resolution, real-world images can be viewed in the test gallery. All photos here were taken using the Nikkor 18-55mm VR kit lens.
Two footage samples are provided in the review: Video 1 (view in HD on YouTube, download the 14.5 MB .AVI file) and Video 2 (view in HD on YouTube).
Canon EOS T1i / 500D vs Olympus E-620 vs Nikon D5000: Review, Sample Photos and Video Clips – This article at quesabesde.com is written in Spanish, so you might prefer to read Google's English translation of it.
The respective kit lens for each camera was used for the test: Canon EF-S 18-55mm IS VR on the T1i / 500D, Nikkor 18-55mm AF-S VR on the D5000, and Zuiko 14-42mm on the E620.
Tons of full-resolution images await your analysis.