Summary: My wife bought this as part of a used G2 kit here on Amazon. I have cropped and adjusted the lighting a little bit so that I can use it on Facebook. To me this lens seems sharp... so sharp that I worry about cutting myself while handling its files...
Summary: I must admit, I shopped cheap for this lens. I found an Olympus Pen E-PL1 with the Zuiko 14-42mm kit lens included on Amazon Warehouse deals. I have a Canon dSLR Rebel T3i, but was wanting to go down with size and weight for certain occasions.
Summary: I found the "Mega OIS" image stabilization to perform well for video but overall, this lens has poor optics in comparison to the 14-45 and does not allow you to extract the full capabilities of Panasonic's excellent M 4/3 technology.
Summary: I bought a Panasonic G1 for the sole purpose of mounting Canon FD style lenses (totally manual operation requiring a custom adapter). I took an immediate liking to the G1 and photos it produced with the Canon FD lenses.
Summary: I have read that 14-45 might be a slightly sharper lens, but I have Panasonic GF1. I don't have any of the large G or GH models. So for me, size matters. Since I bought GF1, the idea was to go small. What is the point of getting a small m4/3 camera and then mount large heavy lenses on it?
Summary: I'm spoiled. I bought the Lumix GF-1 body and 20mm lens separately. /That/ lens is a killer. It looks, feels, and functions like a high quality lens. Since this zoom lens was inexpensive I bought it to fill in for those occasions where I just couldn't "zoom with my feet." It works o.k.
Summary: I bought the Panny G2 with this kit lens and the image quality does the 4/3 format injustice. In fact this lens is so bad, even my DMC-LX3 format comes out ahead in image quality. Seriously even lens from P&S cameras will outperform this lens.
Summary: When I purchased my GH2, I thought that it would be a good idea to purchase a camera that had a simple lens. I wanted something to get started as most people do. In retrospect, I would have been much better off buying the body only, and purchasing an aftermarket lens.