Sigma has announced the 20mm f/2 DG DN lens, its seventh and widest optic in the all-metal I Series of compact primes. The lens will be available for both Sony E-Mount and Leica L-Mount.
The 20mm joins the 24mm, 35mm, and 64mm lenses in the I series that share a wide-open f/2 aperture. The company says that despite the wide aperture and wider field of view, the 20mm f/2 is almost the same size…
