Lens Constructions & MTF Chart of Sigma 14mm f/1.8 Art, 135mm f/1.8 Art, 24-70mm f/2.8 DG OS Art, 100-400mm C Lenses

Sigma today has officially announced their four new Sigma lenses. Here are lens constructions and MTF chart of these four new lenses. These lenses will be available for Canon EF mount, price and release date hasn’t announced yet.
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