Rainer T , Jun 18, 2007; 05:31 a.m.
The following two tests might be interesting to read ...
... however, note, that the raw MTF numbers cannot be compared between the two systems (since two different cameras were used), but the general trend can be compared.
You'll find, that these two lenses are pretty much behaving the same ... except two points ... the Nikkor is better built, the Canon has image-stabilisation. The Nikkor is in Nikonland, what the Canon is in Canonland ... the best available standard-zoom for a crop-sensor DSLR.
Rather than just looking on these two lenses, I would take the D80 and the 30D in my hand and do a bit of playing and testing with them.