The A 2X teleconverters are very good optically. Of course because you're adding glass, a lens plus converter can never match the performance of the lens alone, but the A 2X converters are among the best I've seen. Note that I said "converters," because there are two. The A2X-L can only be used with certain long telephoto lenses. It has a long snout and can't be attached to other Pentax lenses. The A2X-S fits all Pentax lenses. I use the A2X-S once in a while with an A400/5.6. It yields good results. My photo of a dragonfly that's on the opening page of the Pentax Gallery and in their Premier Collection was shot with this combination on an *istD. Paul On Dec 2, 2010, at 9:26 AM, Eric Weir wrote:
> > I wouldn't put it to use immediately, but I've got my eye on a Pentax 2X > Teleconverter-A. I know nothing about teleconverters. General advice would be > welcome as well as comments specifically about this one. > > I haven't really done any wildlife photography, but it's on my agenda, and I > imagine it could be put to use in that connection. > > Thanks, > ------------------------------------------------------------------------------------------ > Eric Weir > Decatur, GA USA > [email protected] > > P.S. I got a Weston Master II exposure meter and manual of eBay. Both look > in good condition. It's been suggested that even it didn't work one of these, > or something like it, would help me understand exposure better. > > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.

