Sigma 20mm f/2 DG DN Contemporary Lens (Sony E)

Engineered for versatility, the Sigma 20mm f/2 DG DN Contemporary delivers professional-grade optics in a refined, lightweight package. This wide-angle prime excels across diverse applications—from expansive landscapes and urban environments to dynamic vlogging and live streaming. The f/2 aperture enables confident shooting in challenging light while facilitating precise depth-of-field manipulation. Night photography and astrophotography benefit from the lens's fast maximum aperture and exceptional optical performance. A sophisticated stepping motor ensures silent, responsive autofocus that seamlessly transitions between stills and video work, while the premium all-metal construction provides durability and a tactile shooting experience.

Refined Optics

Part of Sigma's acclaimed Global Vision Contemporary series, this 20mm prime balances portability with optical excellence through thoughtful engineering. The optical formula incorporates specialized glass elements—including SLD and FLD types—to effectively suppress chromatic aberration across the frame. Three precision-crafted aspherical surfaces minimize spherical distortion while enabling a remarkably compact footprint, making this lens an ideal companion for photographers demanding professional results without the burden of excessive weight. The refined design philosophy prioritizes both practical usability and optical performance, delivering a versatile tool for contemporary imaging workflows.

Physical Design

This Contemporary I-series lens combines cinema-inspired craftsmanship with practical imaging versatility. The robust construction features a mechanical aperture ring, precision-knurled metal surfaces, and tactile controls that facilitate intuitive operation in demanding shooting environments. Optimized for full-frame Sony E-mount systems, it delivers a 30mm equivalent field of view on APS-C bodies, expanding its applicability across Sigma's mirrorless ecosystem. The f/2 maximum aperture represents a sophisticated compromise between optical speed and physical compactness, enabling effective low-light capture and nuanced depth-of-field manipulation. A nine-blade rounded diaphragm renders exceptionally smooth bokeh characteristics, enhancing the lens's aesthetic rendering qualities for both photographic and cinematic applications.

Fast Closeup Focusing

Advanced autofocus performance is delivered through an integrated stepping motor that operates with minimal noise and exceptional smoothness, making this lens equally suited to photography and video production. An arc-type focus selector enables seamless transitions between autofocus and full-time manual focus override, providing intuitive control during critical shooting moments. The refined manual focus implementation offers both linear and non-linear response options, accommodating diverse operational preferences. A notably close minimum focusing distance of 22cm unlocks distinctive macro-adjacent capabilities, expanding creative possibilities for intimate subject matter and environmental portraiture.

All-Purpose Functionality

Constructed from premium all-metal components with precision-engineered internal mechanisms, this lens demonstrates exceptional durability and environmental resilience. A sealed lens mount provides robust protection against dust and moisture ingress, ensuring reliable performance in challenging field conditions. The included metal lens hood effectively suppresses flare artifacts in high-contrast lighting scenarios while safeguarding the front element from accidental contact and environmental hazards. The lens integrates seamlessly with Sigma's optional CH-11 Magnetic Cap Holder—a thoughtfully designed accessory featuring an integrated mini-carabiner for convenient attachment to camera bags, outerwear, or belt systems, streamlining workflow efficiency during mobile shooting assignments.