Sigma 12-24mm f/4.5-5.6 II DG HSM Ultra Wide Angle Lens

Sigma 12-24mm f/4.5-5.6 II DG HSM Ultra Wide Angle Lens

The Sigma 12-24mm f/4.5-5.6 II DG HSM is an ultra wide angle zoom lens suitable for full frame DSLR cameras, released on February 8, 2011. The Sigma 12-24mm f/4.5-5.6 II DG HSM uses a revised optical formulation that includes four latest low dispersion glass elements and one SLD element. Four non spherical elements were used to reduce distortion and other optical anomalies. The equivalent focal length range of the lens on APS-C digital cameras is 18-36mm, suitable for wide-angle shooting.