... I could not resist the cheap price and have my "little Zuiko" appointed as 2nd portrait lens fuerzs Studio. The insertion into E620 and e5 was only against scraping resistance possible, ergo: returning, appropriate comment and ordering a 2nd copy. TODAY Test 2nd lens with the same result, and if you look closely locating metal debris on the camera-side bayonet. So no Monday lens but obvious manufacturing problems - the serial numbers bd. Lenses: 192058313 and 192058406th