Excerpt: I purchased this lens to go with an Olympus E-M10 II, and it was an excellent lens with high-quality optics for the price. However, I ended up returning it and picking up the Panasonic Lumix G Vario 14-42mm f/3.5-5.6 II (note the II in the model name!
Excerpt: I have used this lens extensively on a full-spectrum infrared converted Lumix GX1, and it works great for infrared shooting. See sample photos at Flickr under my nickname and GX1 album.
The lens is sharper than the newer 10-42mm lens.
It has a smoother zoom ring than the newer lens.
Excerpt: This is a great choice for an everyday walking around lens. Better build and image quality than the kit lens, it's fast enough for most situations. Not a go to lens for low light, but at 3.5/5.6 you have to expect that.
Excerpt: I have a number of Olympus and Panasonic prime lenses, yet this is the lens I use the most.
While the 14-42 kit lens that came on my G5 is stiff and hard to zoom, this lens is smooth zooming and a lot sharper.
Since upgrading to a GX7 I am still getting excellent results with this lens.