THE CONTENDERS
Sigma 10-20mm f/4-5.6 EX DC HSM £350, $430
Tamron SP AF 10-24mm f/3.5-4.5 Di II £370, $500
Sigma 10-20mm f/3.5 EX DC HSM £399, $650
Tokina AT-X 12-28mm f/4 Pro DX £540, $500
Sigma 8-16mm f/4.5-5.6 DC HSM £550, $700
Tokina AT-X 11-16mm f/2.8 PRO DX II £599, $535
Nikon AF-S DX 10-24mm f/3.5-4.5G £640, $780
Nikon AF-S DX 12-24mm f/4G IF-ED £840, $1100