Overview

The Olympus Zuiko Digital ED 90-250mm f/2.8 is a professional-grade super-telephoto zoom for Four Thirds, offering a 180-500mm equivalent range. Optically, it delivers excellent color, contrast, and distortion control, but resolution is notably better at the short end and center, with edge performance weaker at longer focal lengths. Build is robust with weather sealing, all-metal barrel, and a smooth tripod collar, though it is heavy at 3.27kg. Autofocus is accurate but somewhat slow. It suits sports and wildlife photographers who prioritize durability and constant f/2.8 aperture over portability.