16 elements in 12 groups (2 FLD glass, 2 SLD glass, 3 aspherical lenses)Minimum focusing distance: 0.19m (wide-angle) | 0.38m (telephoto)Maximum shooting magnification 1: 3.3 (wide-angle end) /1: 4.6 (telephoto end)Filter size: 67mm,Dimensions: 72.2 x 101.5mmWeight 470g, $ 899Along with its anti-ghosting design, the use of Super Multi-Layer Coating and Nano Porous Coating means well-controlled flare for high-contrast results in backlit conditions. It also features a water and oil repellant coating on the front side of the lens. https://photorumors.com/2021/02/23/this-is-the-new-sigma-28-70mm-f-2-8-dg-dn-contemporary-lens/
The Sigma 28-70mm f/2.8 DG DN Contemporary lens is available in L-mount and Sony E-mount. The lens is compatible with Sigma's USB dock UD-II (for L-mount only). The lens is made in Japan at Sigma's Aizu Factory and will be available starting on March 12https://www.imaging-resource.com/news/2021/02/24/sigma-announces-28-70mm-f-2.8-dg-dn-contemporary-lens