Sigma 24-70mm F2.8 DG OS HSM Art
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Sigma 24-70mm F2.8 DG OS HSM Art

The Sigma 24-70mm F2.8 is surprisingly lightweight (for an Art-series lens) and reasonably compact. Here it is shown with the focal length set to 24mm. Build quality seems excellent and the 24-70mm F2.8 is weather and dust-sealed, with rubber gaskets visible on the mount. It is constructed from metal and 'thermally stable composite', which we can only assume is even better than metal, because it sounds fancier.