The G1 is just an amazing camera, but I was a little diasspointed with the range of zoom that came with the standard lens. This is a must have lens to really make the most of the fabulous picture quality of the G1.
Great zoom (although Id still like a little more), nice, light and compact. Good optical stability on maximum zoom although in poorer light the definition is lost somewhat (though this is not necessarily a fault of the lens, it is bound to happen, just a bit of a shame).
All in all, a great lens, and a real must for anyone wanting to make the most of their G1 for anything other family snaps.