sigma 16 28mm F/2.8 DG DN Contemporary Lens For Sony E Mount, 16-28F2.8

Constant f/2.8 maximum aperture is well-suited for working in available lighting conditions.
Two large-diameter aspherical elements control spherical aberrations and distortion for increased sharpness and accurate rendering.
Rounded nine-blade diaphragm contributes to a smooth and pleasing bokeh quality.
72mm front filter thread allows for the use of common screw-in filters instead of specialized setups.
A stepping AF motor benefits both photographers and videographers with its fast, precise, and near-silent performance. Full-time manual focus control can also be selected.