Overview

The Olympus M.Zuiko 300mm F4 IS PRO is a high-performance telephoto lens for Micro Four Thirds, offering exceptional sharpness—near diffraction-limited at f/5.6—and effective image stabilization. Its retractable hood and weather-sealed build are praised, but the focus ring lacks a lock, causing accidental switching to manual focus. The lens suits wildlife and bird photographers who prioritize portability and optical quality over zoom flexibility.