The Sigma 14mm f/1.8 DG HSM Art Lens for Sony E mirrorless cameras is an ultra-wide-angle lens with a large aperture. It features optically brilliant chromatic rendition, reduced chromatic aberration, and high resolution. The lens incorporates three FLD glass elements and four SLD glass elements to minimize transverse chromatic aberration. It also includes a large Hyper Sonic Motor (HSM) for fast and quiet autofocus, along with full-time manual focus.