Image Source: http://shop.panasonic.com/shop/model/H-VS014140
Recently on mu-43.com, user Z-man posted an inquiry about practical impressions of the Panasonic Lumix 14-140mm f4-5.7 zoom lens.
(Click Here) to see the post and numerous informed replies.
I have this lens, and offered this feedback:
I also forgot to mention that the Optical Image Stabilization (OIS) works very well in my experience, though I have heard opinions that differ. Also, this lens is optimized to minimize noise during video capture - not important for me, but crucial for those who shoot a lot of video.