Originally posted by campdog I have a Pentax FA31mm f/1.8 Limited. I might try using that for panoramic shots I want to join. My best bet is to find a 15mm and try a few shots and see that I think before selling one to buy another.
The 31Ltd should be an ideal pano-stitch lens. Depending on the stitching warez used and the scene to be imaged, I may shoot a horizontal series in portrait mode, a vertical series in landscape mode, or a matrix in both modes for more detailed overlays. (Autostitch allows that.) I think you'll find that a 15mm will be useful in small spaces for constrained 'scapes, so its utility depends on the kinds of proportions you want in your shots.