12mm · f/2
The Olympus M.Zuiko 12mm f/2 is a compact, all-metal wide-angle prime for Micro Four Thirds, offering excellent sharpness from f/2.8 to f/11. Weaknesses include heavy barrel distortion in RAW (-5.97%), slight corner softness wide open, and noticeable chromatic aberration. Build quality is solid with a smooth manual focus ring that switches to MF by pulling back. It suits street photographers who value discretion and fast aperture, though the optional hood is expensive.