Overview

The Samyang AF 18mm F2.8 FE is an ultra-compact, lightweight (143g) ultra-wide prime for Sony full-frame, offering solid optical performance with no fatal flaw. Optical strengths include decent sharpness and low distortion (1.8% native, negligible with correction). Weaknesses: high vignetting (~3.4EV at f/2.8, still 2.4EV at f/11), and images may lack contrast. Build is mostly plastic, feeling toy-like, with a smooth focus ring but slower AF. Best suited for travel, landscape, or as a compact walkaround lens for those wanting an affordable ultra-wide without size penalty.