Overview

The Olympus OM Zuiko 400mm f/6.3 is a compact super-telephoto lens praised for its excellent resolution even wide open, with good contrast and low chromatic aberration. Its compact design and retractable hood enable handheld shooting, and the tripod collar aids handling. Weaknesses include a relatively small aperture limiting low-light use and possible color fringing in bright conditions. It suits photographers needing a portable, sharp telephoto for outdoor sports or wildlife, especially on modern digital bodies with high ISO.