Compared to the Panasonic model 2 times more expensive, this Olympus has nothing to envy and it is rather the opposite insofar unlike its competitor it is possible to add a filter screwing. Very compact, good quality, easy to use this lens has a small defect is that the zoom ring turns upside down other common objectives, ie it must rotate in the direction of clockwise to enlarge the visual field, the goal is completely out to 9mm. Apart from that I started a Canon 250D ring on it, it works well. AF works very well with a Lumix G series It comes without hard case but I do not need it. The lens cover holds well; the lens has a locking system a bit cumbersome and unnecessary in my opinion. The distortion to 9mm is important but it is the case of all the objectives of this focal length, it is corrected in post processing. Putting a manual focus is very easy, the ring being pleasant to use; Moreover this kind of objective instead is used AF.
