Sigma 20mm f/2 DG Contemporary Lens For Sony E-Mount

Fast and Versatile Ultra-Wide

The Sigma 20mm f/2 DG DN Contemporary lens offers an ultra-wide perspective in a compact, lightweight design, making it an ideal choice for full-frame mirrorless shooters. Perfect for landscapes, architecture, city scenes, and astrophotography, it delivers a dramatic sense of space with excellent clarity. The bright f/2 aperture is well-suited for low-light situations and allows for creative depth of field, especially when working up close. Despite its wide-angle reach, the lens maintains a highly portable form factor—measuring just 2.8 x 2.9 inches and weighing slightly over 13 ounces. This makes it easy to carry for everyday use, and the internal focusing system, combined with a smooth and quiet stepping motor, ensures fast and reliable autofocus for both stills and video.

Optical Excellence and Build Quality

Engineered for high performance, the optical design includes two low dispersion and three aspherical elements that minimize distortion and chromatic aberrations while maximizing sharpness and contrast across the frame. A Super Multi-Layer Coating effectively reduces flare and ghosting for clean, vibrant images even in challenging light.

The lens offers a close focusing distance of just 8.7 inches, making it great for dramatic wide-angle close-ups. A rounded nine-blade diaphragm produces smooth and natural bokeh, while the dust- and splash-resistant construction ensures reliability in various environments. A brass bayonet mount provides durability and precise alignment with your camera body.

Sigma I Series

As part of Sigma’s I Series, the 20mm f/2 lens reflects a commitment to balancing performance, portability, and aesthetic appeal. Designed specifically for mirrorless systems, I Series lenses feature all-metal construction with precision-machined aluminum components for a solid, premium feel. Internal metal parts enhance robustness and deliver the tactile quality photographers expect from professional gear. Inspired by Sigma’s cine lens design philosophy, the I Series is built not just for image quality, but for an exceptional shooting experience.