Originally posted by TOUGEFC Yep Sigma 30mm f/1.4
Interesting that FA31,FA43 and f/1.2 was guessed...
choose the FA31 because it is so wide and smooth. I thought I saw some onion rings there but dismissed it since I wasn't sure because the image is so small. I didn't think it was an FA43 because of the smooth bokeh transition although I think it was some sort of an f1.2 (not necessarily Pentax because it doesn't look to be and lacks the certain artsy bokeh, but still a bit hesitant to be an f1.2). finally I said Sigma 85 because of the overall rendering that the lens produces, although I got the focal length wrong here but the rendering looks like a typical fast Sigma. again the center resolution made it difficult to distinguish the lens, also hesitant about the 85mm.