Norm, a Pbase gallery member, has posted some comparison shots of Nikon D200 and Canon EOS 20D in his gallery. Both cameras shot in the sRGB color space. nikon capture v4.4.0 used for the NEFs and canon’s basic EOS viewer utility for the CR2 conversions, both with all settable parameters to zero or neutral (see notes in each gallery for specifics). converted to best-quality JPEGs but compressed after uploading using pbase’s compression utility.
See also: Canon | Digital Camera | Nikon