In telephoto very blurry photos are produced. With manual focus can actually be brought into focus, but once triggered, gives a blurred picture (?). Can not keep up with (also very cheap) lenses of the optical power. Maybe the lens when shooting video has its place, to take pictures, it is certainly useless. Have purchased a kit with the GX1 the lens. Even the test at a GH3 also brought bad results. Pity about the Euros. Will probably be in the corner until it is thrown away.