Actually, the ideal partner for the GX1, as very compact. The combination is just pockets fit. The focal length range is up to 84mm KB-equivalent, just enough for beautiful portraits. An automatically closing lens cap is to refer it as aftermarket products from the United States, making it the ease of a compact camera absolutely equate. Unfortunately me the lens has high disappointed. My copy is an unsatisfactory edge definition and is also really well centered (sharpness drop the left edge particularly striking). The tested as a comparison 14-42 kit lens (without PZ) is considerably larger and somewhat plastic-heavy. But it delivers despite the much lower price a much better resolution without significant bleed. My personal opinion: Unfortunately, with the compact PZ 14-42 the theoretically possible with the Lumix cameras sensor resolution not be reached. I would advise before buying to own test photos.