Summary: I've been replacing my P&S camera with Panasonic Lumix 4/3 camera with 20mm lens and have been really happy with it. Then one day, I happened to chat with my friend whom is a photographer. He recommended me this lens.
High quality, light weight ultra-wide for micro four thirds systems.
David Robinson, Amazon
11 April 2012
Summary: I owned and used this lens extensively when I had my Panasonic GH1. It is a very light-weight but sharp "ultra-wide zoom" for the micro four thirds system cameras. This includes Panasonic, Olympus and Kodak models.