Overview

The Sigma 17mm F4 DG DN Contemporary is a compact, metal-built ultra-wide prime praised for its excellent build and handling. Optically, it offers good center sharpness but slightly dampened compared to peers, with decent corners. Weaknesses include heavy vignetting (~3.4 EV at f/4) and barrel distortion (4.1%), though both correctable. Autofocus is fast and silent. It suits photographers prioritizing portability and build over speed, ideal for landscape, travel, and street.