One good reason to shoot Canon over Nikon ...

[JumboShrimp]

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=628&Camera=614&Sample=0&FLI=0&API=0&LensComp=454&CameraComp=0&FLIComp=0&APIComp=0

 

[Click]

The choice is clear

 

[privatebydesign]

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=628&Camera=614&Sample=0&FLI=0&API=2&LensComp=977&CameraComp=453&SampleComp=0&FLIComp=2&APIComp=0

The Canon is noticeably better where they cross over than the Nikon lens that was considered a benchmark for many years.

And before anybody says 'yes but the Nikon is an f2.8 and the Canon at f4 is much easier to make' look at this one.

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=628&Camera=614&Sample=0&FLI=0&API=0&LensComp=977&CameraComp=453&SampleComp=0&FLIComp=0&APIComp=0