14-24/2.8 kills Canon's wide-angle zooms.
Nikon 24/1.4 has like 1 stop of vignetting in the corners. Canon's has like 3.
If you compare most MTF charts of primes, Nikon has higher MTF wide open than Canon (and usually you buy primes to shoot them wide open or thereabouts).
So please someone explain to me why Canon glass is better.
Look, the Nikon 14-24mm is a great lens. The problem is, it has almost 4% barrel distortion at 14mm. For someone like me, who shoots architectural stuff almost always at f/8 or smaller, and for whom the widest fov is critical, it just doesn't cut it next to the Canon 14mm.
Canon's vignetting decreases significantly by f/8 or f/11, and in any case, it is very easily fixed in post.
When you fix 4% barrel distortion, unfortunately, you lose the fov advantage that 14mm might have because part of the image has to be thrown away.
So, it really depends on the application.
On a side note, Guys, how are you viewing these RAWS
? I have updated Lightroom 3 and PS5 and it says the Nikon file is 'incompatible??? Can someone help??