Summary: I am very pleased with this very functional lens. I wish it was a bit faster at the higher focal length... but overall a great lens for travel and general outdoor shots. I decided to keep my Olympus E620 camera due to this lens. I have 3 Nikon camera's aand use them for sports and low light sports but this lens is great for travel and general outdoor work.
Summary: First and foremost, this lens is a part of the SG range of Zuiko lenses. There are also HG lenses, of which I own three (11-22, 50 Macro and 50-200) and there are also SHG lenses, of which I own four (7-14, 14-35, 35-100 and 150). A comparison with these higher grade with more refined optics and build would be unfair. Within its class, I find this lens to perform quite well, with the added benefit of the 10X telephoto range.
Summary: This lens is the one lens I take everywhere, there may be sharper lenses but this one is fine for most things. When you don't want to carry a lot of weight or be ready for any type of shooting this is the one I take.
Great for family photos - Not so good for business
6 November 2011
Summary: I have had this lens for several years, and have taken it all around the world and taken 10's of thousands of pictures with good luck. When I started using this for eBay images the lens was OK but required a ton of light to allow proper focus and the long focal length required I use a tripod even at 100 or 125th of a second to get a sharp image.
Summary: lots of noise unless you have light, light, light, then still needs touch up, Good lens for its specs, olympus needs to rethink its lens diversity and quality and get rid of its lowerend and reset the price for upper end and high quality lenses.
Summary: telephoto shooting catches edge of lens hood in photos quite a bit of grain when shooting in smaller aperatures even when have low ISO if you like macro, don't even think this lens can get you that a good combo of the 14-42 and 40-150 lenses if you get tired of switching them on the camera body (like i did)