17mm · f/2.8
The Olympus M.Zuiko 17mm f/2.8 pancake lens is a compact, lightweight prime for Micro Four Thirds, praised for its portability but criticized for softness wide open and modest f/2.8 aperture. Optical quality improves when stopped down to f/4-f/5.6, with decent center sharpness but softer corners and visible chromatic aberration. Autofocus is adequate for general use but not fast. Build is solid with metal mount but no weather sealing. It suits street photographers prioritizing size over ultimate image quality, though alternatives like the Panasonic 20mm f/1.7 offer better performance.