Here is a photo taken with a Chinon-made Chinar 28mm f/2.8 lens on my F2SB. I bought this lens cheap as new (old stock) about 4 years ago and never got around to trying it until now (what can I say, I'm just not much of a wide-angle user). Hopefully it shows up in the scan, but the whole left side is fuzzy. The center is not sharp, but there does seem to be a "sharp" region just to the right of center. I'm taking a wild guess that an element has decentered. What do you guys and gals think?