Summary: A fast, ultra-compact prime lens for Micro Four Thirds System cameras.Launched at the same time as the Lumix DMC-GF1 camera Panasonic's Lumix G 20mm f/1.7 ASPH. lens will be offered with the camera body and makes an attractive kit option for serious photographers. Compact enough to make the GF1 a pocketable option, it also provides a fast f/1.7 maximum aperture that lets photographers shoot with a shallow depth-of-field. . .
Pros: You want a fast lens for available light photography and require high performance across a wide aperture range., You require distortion-free images., You have a compatible camera body. Don't buy this lens if :, You really need a zoom lens., You shoot lots of close-ups.