Have the lens is not yet able to test extensively. My first impression is very good. The feel is very good. The focusing is performed quickly and accurately. The first photos were are very good in their picture quality for my. The lens looks in my E3, due to the small size, a little strange. For E420 / E520, it certainly fits better. Annoying is the supplied lens cap with screw cap. No one turns these fiddly cover the lens. Have ordered me a terminal cover. For the cover, there is a deduction of points, otherwise the lens is highly recommended.
