Mixing a comfortable wide-angle design with an ultra-fast maximum aperture, this 16mm f/1.4 DC DN Contemporary Lens from Sigma is a 24mm-equivalent prime forAPS-C-format Sony E-mount mirrorless cameras. Characterized by its bright f/1.4 maximum aperture, this lens is adept at working in low-light conditions, and alsoaffords increased control overdepth of field for selective focus control. The optical design makes use of several low dispersion and aspherical glass elements to control color fringing and various aberrations in order to provide high sharpness and clarity throughout the aperture range. Individual elements also feature Sigma's Super Multi-Layer Coating to suppress flare and ghosting for greater contrast and colorfidelity when working in strong lighting conditions. Benefitting the optical assets, this lens also sports a stepping AF motor for quick,quiet, and smooth focusing performance that suits both still photography as well as video applications. Additionally, a weather-sealed, durable construction enables this 16mmf/1.4 to excel in inclement weather conditions.