Overview

The Olympus Zuiko Digital ED 70-300mm f/4.0-5.6 offers a 140-600mm equivalent field of view on Four Thirds, with good sharpness at shorter focal lengths (especially 100mm) but softness at the long end, particularly wide open. Chromatic aberration is low below 200mm, and vignetting is minimal. Build quality is solid and robust, with smooth zoom and focus rings, though the lens extends and lacks image stabilization (bestlightphotoblog). Autofocus is generally accurate but can hunt on low-contrast subjects (bestlightphotoblog). It suits Four Thirds users seeking an affordable, well-built super-telephoto for daytime or tripod use.