Sigma 16-28mm F2.8 DG DN Review
(Photography Blog)

The Sigma 16-28mm F2.8 DG DN is a very compact, lightweight ultra-wide-angle zoom lens for mirrorless cameras. Available in Sony Alpha and L-mount (Sigma, Panasonic and Leica), it boasts a fast, constant aperture of f/2.8, weather-sealing, 9 blade diaphragm and quick and quiet auto-focusing. Read our in-depth Sigma 16-28mm F2.8 review now, complete with full-size sample photos.