Sigma has expanded its line of Art lenses with a new 20mm f/1.4 DG HSM model, hailing it as the world’s first 20mm f/1.4 ultra wide angle lens.
The full frame lens will be available in Nikon, Canon and Sigma mounts. It uses “F” Low Dispersion (FLD) glass and five Special Low Dispersion (SLD) glass elements to reduce spherical aberration, axial chromatic aberration and field curvature. According to Sigma, the lens is resistant to strong incidental light sources such as backlight thanks to the use of its Super Multi-Layer Coating.
Focusing is driven by a hypersonic motor for silent, speedy operation. It offers a nine blade rounded aperture and a brass bayonet mount.
While the 20mm has a bright f/1.4 aperture it can be stopped down to f/16. It has a minimum focusing distance of 10.9 inches.
The 20mm Art lens is built from a Thermally Stable Composite compound which can endure extreme temperatures while not being overly heavy. The lens weighs 2.1 pounds and measures 3.6 x 5.1 inches.
Like other models in the series, the 20mm prime is compatible with Sigma’s optional USB Dock, which allows photographers to update the lens’ firmware, adjust focus points and customize full-time manual focus over-ride function settings using Sigma’s Optimization Pro software.
The lens will ship in November but is available for pre-order now for $899.