All images except the last 4 at the end of the gallery were taken with a replacement lens. The first Olympus 12mm, f/2 was a poor copy. It was not as sharp as I expected and I exchanged it at B&H (excellent service). It was not quite as sharp as my Olympus 9-18mm at 12mm and at the same aperture and was not good wide open at f/2. The exchanged copy is a bit sharper than my 9-18mm and is much sharper when at f/2 than the copy I returned. From what I have read on the internet poor copies have been an issue with this lens.