2010/2/26 Rob Studdert <distudio.p...@gmail.com>: > On 26/02/2010, AlunFoto <alunf...@gmail.com> wrote: > >> Oh, and btw, I think there's nothing in the K-mount that beats 645 >> optics in lens stacking or bellows for extreme macro. Such >> arrangements bring out the worst in any lens combinations with regards >> to chromatic errors, but the 645 lenses continue to surprise me in >> this regard. Until this year I had used the A*300/4 and FA 75/2.8 >> stacked (4X magnification), the A 120/4 macro on bellows or the 75/2.8 >> reversed on bellows for up to 2.5X. All with good results. This winter >> I have borrowed a FA 150/2.8 and stacked it with the 75mm, and that's >> even better in the 2X area. > > The V125/2.5 APO with a TC behind it and/or tubes exhibits virtually > no CA or LCA and it still retains full auto aperture operation on a > K-body (when using an appropriate tube set)
Never tried any Voightländers... :-( I should have said "current or past offerings from Pentax in K-mount", I guess. Because that's where my experience is. Jostein -- http://www.alunfoto.no/galleri/ http://alunfoto.blogspot.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
