I use the lens on a Panasonic G2 and am very happy with the performance. The lens I have the Panasonic 14-140mm preferred because of price, size and weight. After extensive testing I have found that the lack of image stabilization does not adversely affect normal lighting conditions on image quality. The sharpness if wide-angle or zoom I am very satisfied. Portraits are knackscharf and have a nice blurred background (bokeh). The mechanical quality of the lens has also convinced me. The zoom ring is relatively stiff but this especially when smooth to use films. The autofocus is very quiet. Has on the speed of the autofocus and the accuracy compared to the Set Lens nothing changed. The kit lens Panasonic 14-42mm comes only in low light conditions indoors are used.
