Recently, according to foreign media reports, and Sigma may release two new native mirrorless lenses in the near future, namely the ultra-wide-angle 20mm f/1.4 DG DN Art and the wide-angle 24mm f/1.4 DG DN Art.
Obviously, these two lenses belong to the Art series and are not the Contemporary series that focuses on lightweight design, that is, focusing on optical quality. The optical design of the 20mm f/1.4 DG DN Art lens is a structure of 17 elements in 15 groups, including 2 pieces of SLD glass and 3 pieces of aspherical lenses. The minimum focusing distance is 0.23m, the magnification is 1:6.1, and the lens diameter is 82mm. , the lens provides the Maison Alliance L mount and Sony E mount. The L mount lens size is φ87.8 x 111.2mm and weighs 635g. The E mount lens size is φ87.8 x 113.2mm and weighs 630g. The optical structure of
24mm f/1.4 DG DN Art is 17 elements in 14 groups. The minimum focusing distance is 0.25m, the magnification ratio is 1:7.1, the lens diameter is 72mm, the L mount size is φ75.7 x 95.5mm, and it weighs 520g. The E-mount version is φ75.7 x 97.5mm and weighs 510g.
It is worth mentioning that these two lenses originally had SLR-modified E-mount products. At that time, you can see how much the optical quality of the original mirrorless version has improved compared to the modified SLR version.
