> Did Pentax ever make a macro teleconverter? Nope.
> I've been looking around on the web and the only one I've found is > the Vivitar 2x. Is that one good? Yes, indeed. I'd say, from my experience, that (in its non-macro mode) it's the optical equal of the A 2X-S and the K T6-2X (at least on the lenses I've used it on)... > thanks for your comments about the 200mm 2.5. ...including the K 200/2.5. > Why is there so few of these? It seems like they would be very > handy. I think that they're actually fairly common. Vivitar had been selling them for years, both in an earlier pre-Ka K-mount version and later in a Ka-mount version. (I'm not sure if Vivitar ever made a screwmount version of this particular TC, but someone else will know.) It seems as if they're a frequent auction item on eBay. Fred