Love this lens.. built like a tank, and weighs pounds! Took four generic photos today, just to show the effect of the built in filters on this lens. All taken with a Olympus E-M5 with Fotodiox MD/MC -m4/3 adapter. Handheld, about f4.0, iso 320, 1/320 second, not really sure what I focused on, so excuse the lack of crispness These are straight out of the camera as shot RAW 1A Filter 80B Filter View attachment 338195 Y48 Filter 056 Filter Heres one I did edit a slight bit. f4.0, iso 320, 1/320 second, I think I was about 50' away from this building wall.