Considering the wide focal range this lens covers, one can’t really complain about the sharpness. Sure, it isn’t as good as an expensive fast prime but remains more than enough for casual photography.
Regardless of the focal length, the lens is at its most useable at f/8.
http://www.mirrorlessons.com/2015/10/13/from-wide-to-tele-panasonic-14-140mm-f3-5-5-6-review/
Olympus IBIS vs Pana 14-140mm II OIS:
I was playing with my different lenses looking into the fact most lenses breath and was amazed to find my 14-140 doesn't suffer from breathing. I never thought to look because I just thought it would. Is panasonic doing some trickery to make it appear not to breath or am I just crazy?
Firmware for improved Dual IS
http://av.jpn.support.panasonic.com/support/global/cs/dsc/download/fts/dl/fs14140.html
One year with this lens
http://www.mirrorlessons.com/2016/11/28/nearly-year-versatile-panasonic-14-140-v-2-peter-frailey/
Did the firmware in 2016 update solve the micro-shaking problem?
It looks like you're new here. If you want to get involved, click one of these buttons!