Alan Chan http://www.pbase.com/wlachan
Unless the 28 is one stellar lens, the 31 is better. They really got it right with this lens. My only quibbles are with it's physical size (It's a pretty big lens), filter thread (58mm), and silly little built in hood that precluded the use of a handled polarizer, which is what I like using. -----------
I use a polarizer with my FA 31. It is more awkward than one would like.
I often wonder what I will do when the lens cap finally get lost or crushed. I suppose one could get a screw-in cap.
Joe