The Sigma 10-20mm F3.5 EX DC HSM builds upon Sigma’s popular 10-20mm f/4-5.6 lens with a brighter f/3.5 aperture.  The new lens continues with the same EX build quality and speedy hypersonic autofocus motor.  The Sigma 10-20mm F3.5 EX DC HSM will be available for Sigma, Canon, Nikon, Sony and Pentax DSLRs.

More details from Sigma’s press release below. [Read more…]