Sigma AF 16-28mm f/2.8 DG DN Contemporary for full-frame Sony E-mount cameras is suitable for photo and video in various genres, including events, landscapes, architecture, interiors, and medium-to-wide shots. The constant f/2.8 aperture supports low-light shooting and bokeh. Optical design: 16 elements including aspherical and low-dispersion elements to reduce chromatic artifacts, especially near frame edges outside the focus area. Stepper drive provides fast and quiet autofocus. Included: Sigma AF 16-28mm f/2.8 DG DN Contemporary lens, front and rear caps, 72 mm filter, lens hood, transport pouch.