Spotlight by dixeyk, on Flickr
For an adapted lens it fits really well on the camera. It doesn't feel extraordinarily long on the XE1 (certainly shorter than my Rokkor 50/1.4). Man it sure feels great in the hand. De-yellowed it with several days under a UV light. The aperture turning the reverse from every other lens I have is interesting. I believe this is f4 or f5.6. FWIW the sharpness is actually pretty good wide open. I can see using this lens a lot.