Performance beyond expectations condensed into a small body: the 50mm F2 DG DN | Contemporary The SIGMA 50mm F2 DG DN | Contemporary features high optical performance with a bright F2 aperture, that creates expressive images with a shallow depth of field and beautiful bokeh. With its compact size, this popular classic focal length is perfect for portrait, streets and everyday photography. "Standard lens" that matches the optical performance standards set by the SIGMA Contemporary line. SIGMA I series lenses are developed around the concept of "Compact everyday lenses with outstanding image quality" and the SIGMA 50mm F2 DG DN | Contemporary is exactly that. It features high-quality optics in a compact size. The 50mm F2 DG DN | Contemporary is constructed using a single SLD element and three aspherical lens element that are excellent at correcting various types of aberration for clear, high-definition images. The 50mm focal length is mostly known for portrait photography, so careful consideration was taken when designing the lens, focusing on the smoothness of the bokeh created by the F2 aperture. Its optical design gives smooth transitions from in-focus to out-of-focus areas, and helps minimize flare and ghosting caused bby backlit environments. The quiet stepping motor provides quick, reliable autofocusing for both stills and video. Compact 50mm standard prime Inner focus system Stepping motor High-speed autofocus Compatible with Lens Aberration Correction Super multi-layer coating Aperture ring Focus mode swith Mount with dust and splash resistant structure Designed to minimize flare and ghosting