Sigma’s new 35mm F1.2 DG DN Art is an ultra-fast semi-wide-angle prime lens for full-frame Sony, Panasonic and Leica mirrorless bodies. The lens, which Sigma claims can resolve over 50 million pixels, contains a total of 17 elements, including aspherical and ‘SLD’ glass. The minimum focus distance is 30cm (~11″), with a max magnification of 0.2x.

The 35mm F1.2 is fairly hefty, weighing over 1kg (2.4lbs) with a length of 136mm (5.4″). This is compared to the older 35mm F1.4 Art, which weighs 665g (1.5lb) and measures 94mm (3.7″) in length. The filter ring of the new 35mm F1.2 is supersized too, at 82mm, thanks to that massive front element (see below).
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https://www.dpreview.com/news/8715104889/sigma-35mm-f1-2-dg-dn-art-coming-to-full-frame-sony-and-l-mount-bodies