> are the Pentax 100mm dental macros more rare/collectible than the > ordinary 100mm f:4 macros?
Yes, in the sense that there aren't as many of 'em out there. However, I've never really heard of a whole lot of "excitement" over collecting them... > What is a good price to pay for one? I could get one for 95 euros > (M-version), although I want to check it out for possible lens > separation first. That's a good price for any Pentax 100/4 macro lens (dental or otherwise), I'd say. There are (from my experience) no poor Pentax macro lens designs. And there seem to be (from my experience) no poor 90mm, 100mm, or 105mm macro designs from any of the 3rd-party companies, either. My wife uses the A 100/4 Macro (optically the same as the M and the dental), and it's a good lens (although my favorite is the A 100/2.8 Macro). My only negatives about the Pentax 100/4 Macro design are that f/4 is sometimes a little slow, and that the bokeh is a little harsh (but this is not an uncommon macro trait). Fred, K1FW
