The lens is fast, it also brings a lot of set pieces in addition out and the manual focus ring is a real highlight because it has a distance indicator and only works in one direction. So far, conventional MFT lenses often had a ring you could prove time with left- and right-hand rotation times with depending on your mood. So manual focus has become much easier.
What is slightly annoying, however, that the focus ring relatively easy returns. If you pick up the PEN from his pocket and holds this to the lens, it may be that adjusted unnoticed the focus ring in the manual position and one first stands a little stupid because the autofocus will not. Here, I have unfortunately already missed a couple of motives, but with some experience you know that you better looks up again before.
Although some complain that the focus was unsatisfactory, I had on my part that can not yet understand very rare.
In short: A wonderful immerdrauf lens that each PEN enriched, especially if you like to receive at night and twilight! Combined with the Olympus 45mm MFT lens I use hardly any other lenses, the kit lenses remain more often unemployed. My full recommendation!