Overview

The Olympus OM-System Zuiko Auto-W 18mm f/3.5 is a compact, solidly built ultra-wide lens (100° angle of view) praised for near-zero distortion, excellent color rendition, and sharpness. Its main weakness is susceptibility to lens flare. On high-resolution digital sensors, critical focus requires careful use of magnification due to depth-of-field scales being optimistic. The protruding front element is vulnerable and standard filters require a rare, expensive step-up ring. It suits photographers wanting a portable, distortion-free super-wide for architecture, street, or creative perspective work.