Overview

The Olympus OM-System Zuiko Auto-Zoom 75-150mm f/4 is a compact, all-metal zoom lens with a built-in hood and 52mm filter thread. It features a parfocal design and internal zooming. Optically, it suffers from corner softness at f/4, especially at 75mm, and low contrast wide open. Flare is an issue due to single coating, though the hood helps. Focusing on modern mirrorless cameras can be tricky. It suits photographers wanting a compact, well-built vintage zoom for film or adapted digital use, accepting its optical limitations.