Sigma already offers a well-regarded 14-24mm F2.8 for full-frame DSLRs, and is now adding one to its lineup of lenses for full-frame mirrorless cameras: the 14-24mm F2.8 DG DN Art, to be released in August for Panasonic / Leica L-mount and Sony E-mount.
The company calls it the ‘definitive lens for astrophotography’ and emphasizes its ‘outstanding’ resolution to the edges of the frame, achieved in part thanks to the inclusion of low dispersion elements and Sigma’s Nano Porous Coating (NPC).
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https://www.dpreview.com/news/0635041465/sigma-announces-14-24mm-f2-8-dg-dn-art-for-full-frame-mirrorless
