a) I NEVER claim one lens out-resolves another lens the same way you did. If you want to make such claims, the lenses MUST be mounted on the same camera and tested vigorously. You were the one who says the center portion of one lens is sharper than that on another lens. But you could NEVER provide any supporting evidence to back yourself up.
b) Since you are quite slow, let me repeat myself here on how benchmarks or comparisons are made:
Look at maximum sharpness that can be achieved by lens relative to performance of sensor. Now look at the performance wide open: both center and edges. See how it evolves as the lens is stopped down. Judge from there.
So, if on one lens, you look at the measurements and see a HUGE difference between the edge and the center performance (e.g. Nikon 10-24) and you don't see the same on another lens (e.g. 14-24 f/2.8), then it is VERY obvious which one is the better lens.
Another example: compare Canon 17-55 f/2.8 IS vs Nikon 17-55 f/2.8. Everything else being similar, just look at 24 mm extreme edge performance at f/2.8. It is rather obvious one easily trumps the other.
Now, compare Canon 10-22 vs Nikon 10-24. Examine the edge performance at 10 mm wide-open. On Canon, resolution of edge is 77% that of center, but on Nikon that ratio drops DRAMATICALLY to 44%. The weird thing is that the 10-24 is released AFTER the 14-24.
c) So, you see, I am consistent and I can easily back myself up. You, on the other hand, cannot.
Perhaps you feel sore that the lens which cost you a fortune is not THE benchmark (like those poor sods who forked out a fortune for the rather mediocre canon 50 f/1.2L lens). But you can find solace that it is, after all, the best lens in its category for your mount. And what you do with it is what really counts.
You keep talking the lenses MUST be mounted on the same camera and tested vigorously yet u show the 2 links the lenses use on two different bodies... you are the one that is slow and contradicting in your replies..:bsmilie: