
The Sigma 16-28mm F2.8 DG DN Contemporary delivers surprisingly few compromises for a Contemporary-line lens, leading with high sharpness across the frame in a light, internally-zooming 450g body. It starts a true 16mm wide, takes 72mm filters, and undercuts the Sony GM by more than half. The main caveats are mount-only weather sealing and heavy uncorrected vignetting and distortion at the wide end.
- — Superb center sharpness with very impressive borders and corners across the range
- — Light and compact at 450g with an internal zoom that does not change length
- — Starts at a true 16mm, a millimeter wider than the Tamron rival
- — Weather sealing is limited to a gasket at the lens mount only
- — Strong vignetting at f/2.8 (3+ EV) at the wide end before correction
- — Around 4.5% barrel distortion at 16mm that needs correcting
