Overview

The Olympus 12-45mm F4 Pro is a compact, weather-sealed standard zoom for Micro Four Thirds, praised for superb optics and impressive close-up capability. It offers excellent center sharpness and good edges, though raw distortion is high without correction. Build quality is solid with metal construction and smooth controls, but the external zoom mechanism is less smooth than expected. Autofocus is fast and quiet but can struggle in low light. It suits photographers prioritizing portability and weather resistance over a faster aperture.