I'm looking for opinions on sharpness.
Two nice and well priced ultra wides are available, the Tokina 12-24mm & Sigma 10-20mm. Tokina is fixed at F4, Sigma is slower at F4-5.6 but wider at 10mm vs 12mm. Both get good reviews. I have the Nikon 18-200mm (and love it)so I don't need the wide lens to go past 18mm.
Sharpness is the big question for me. I would like the extra 2mm of the Sigma, but not at the expence of a big difference in sharpness. I'm an amature, in it just for fun, although I take many shots, but don't edit many. I'm using Nikon D-70s, for the wide, mostly landscape and inside portrate.
Anyone have an opinion as to the sharpness compareson of the two in normal lighting conditions? Is there something else I'm missing?
Thanks in advance for your help!