http://www.thkphoto.com/products/kenko/kenko-03.html
Ta; that looks satisfactory. Now I have to get a UK dealer to order them. Pentax do actually list extension tubes in their on-line shop, but they're incredibly expensive, and they don;t actually say that they support A, let alone FA.
The new Kenko tubes will autofocus with Pentax lenses. They are a new product, though, and may not be available yet. Worth waiting for, if not. Right now you can get the Kenko 25 mm. AF tube.
Joe
