So I am still in search of an uwa for a 1d series. Tried the sigma 12-24 and just really didn't like the quality, don't know if it was a bad copy just didn't like. So I keep hearing about these two lens and I know on the 11-16 I can't use it until about 12mm or so. How is the tokina 12-24 in comparison. F4 is fine so it is not an issue between the 2.8 and 4, more about iq and functionality.



