about this item:

Sigma 20mm f/1.4 DG HSM Art Lens for Sony E

Truly wide and truly fast, the Sony E-mount 20mm f/1.4 DG HSM Lens is a member of the venerable Art series of Global Vision lenses from Sigma and pairs a sophisticated optical design with a robust physical construction. Comprised of 15 elements in 11 groups, the lens design includes two "F" Low Dispersion (FLD) elements, five Special Low Dispersion (SLD) elements, and two aspherical elements to significantly reduce chromatic and spherical aberrations, as well as limit distortion for clean, sharp, and evenly illuminated imagery. A Super Multi-Layer Coating has also been applied to minimize surface reflections, flare, and ghosting for increased contrast and color accuracy. The wide focal length and consistent image quality make this lens especially suitable for landscape, interior, architectural, and astrophotography applications, while the fast f/1.4 maximum aperture deems it ideal for natural and low-light shooting.

• E-Mount Lens/Full-Frame Format:
• E-Mount Lens/Full-Frame Format:
• Two FLD Elements and Five SLD Elements:
• Two Aspherical Elements:
• Super Multi-Layer Coating:
• Hyper Sonic AF Motor, Manual Override:
• Rounded 9-Blade Diaphragm:
• TSC Material, Brass Bayonet Mount:
• Built-In Petal-Shaped Lens Hood: