http://www.thephoblographer.com/2013/07/18/dxomark-sigma-18-35m
See for yourself folks! Canon Watch reported on the comparison of the new
Sigma 18-35mm f1.8 DC HSM to a couple of primes, and shows that it basically
destroys them in terms of image quality. But we decided to put it up
against some other close possible competitors in the same near focal lengths
. The results: it beats all other possible competition except for one Nikon
lens.