looking to pick up a wide angle lens
looking at either:
Nikkor AF-S DX 12-24mm F4.0 G
or
Sigma EX10-20mm For Nikon Digital
the nikon is like 980 bucks, while the sigma is 600.
how do they compare quality wise? am i better off saving up for the nikon? or is the sigma decent enough?
anyone have any other suggestions for a good wide angle lens, perferably something in the 5-700 dollar range.