On 26/02/2010, AlunFoto <[email protected]> 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) -- Rob Studdert (Digital Image Studio) Tel: +61-418-166-870 UTC +10 Hours Gmail, eBay, Skype, Twitter, Facebook, Picasa: distudio -- 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.
