Thanks Rob, According to John Shaw, two macro lenses don't stack well together. Though I doubt he has tried Pentax optics, I think I will explore other options first.
The FA 100/2.8 and A*200/4 macros are my only options on the tele side at the moment. Jostein Quoting Rob Studdert <[EMAIL PROTECTED]>: > On 19 Dec 2005 at 14:07, Jostein wrote: > > > Stopping down the 50mm to f/2 improves contrast, but introduce more > optical > > errors with small apertures on the 200. This leads me to believe that the > best > > 50mm would be the one that is the sharpest at full opening, whatever that > may > > be... > > What about an A50/2,8 macro, they are reasonably sharp wide open and seem to > be > pretty abundant on the used market these days? > > Cheers, > > > Rob Studdert > HURSTVILLE AUSTRALIA > Tel +61-2-9554-4110 > UTC(GMT) +10 Hours > [EMAIL PROTECTED] > http://members.ozemail.com.au/~distudio/publications/ > Pentax user since 1986, PDMLer since 1998 > > ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.

