The Sigma 17mm f/4 DG Contemporary Lens (L-Mount) is a lightweight and compact, versatile lens with a wide-angle and fast design. It features a wide field of view along with a modest f/4 maximum aperture to keep the overall size and weight as small and compact as possible.

The Sigma 17mm f/4 DG Contemporary Lens (L-Mount) is an ultra-wide-angle lens that is a perfect partner for lightweight landscape kits, everyday shooting of architecture subjects and interior scenes, and even as a creative option for unique portraits and vlogging.

Featuring an internal focus design paired with a stepping AF motor provides fast, quiet and accurate focusing performance that is ideal for both still and video applications. The optical design of the Sigma 17mm f/4 DG Contemporary Lens includes two SLD elements and three aspherical elements, designed for optimal sharpness and to limit distortion. The lens elements also include a Super Multi-layer Coating to control flare and reflections.