I've had good experience with most of these super zoom lenses from other manufacturers and since all of the XF lenses I've had so far have excellent lenses I thought this would be a good addition for my system. I like using these lenses where I know it's either going to be difficult to change lenses or the climate isn't going to ideal to leave your cameras sensor naked to the elements. Apart from that I just like using them. Full stop.
So, how does the lens perform. Not the sharpest lens for the system, but for me, one of the most useful since it's WR Zoom range is great for me since I like shooting long. I find something in the 18-70 range too short. Must be at least a 100mm. I love using the Olympus 14-150 because it really covers most of my needs when on a long walk or when I'm on holiday, and this is exactly why I purchased this lens.
So far, they do sharpen up nicely in Photoshop but I'll have to use it a little more before I give a final verdict on this lens.