Sigma 12-24mm f/4.5-5.6 II DG HSM ultra wide angle lens
lens
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wide-angle-lens
sigma
ultra-wide-angle-lens
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sigma-12-24mm-f/45-56-ii-dg-hsm
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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. Sigma 12-24mm f/4.5-5.6 II DG HSM uses a revised optical formula, which includes four latest low dispersion glass elements and one SLD element. Four aspherical 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.