I'm only reporting what the Pentax manual says, PJ. I've never had any of these lenses nor any of the "L" converters.
Godfrey On Sep 5, 2005, at 1:12 PM, P. J. Alling wrote:
Interesting, since I don't think the protruding elements will allow you to mount the L converter on a A*300 f4.0, (or on the M*300 for that matter).

