"P.J. Alling" <webstertwenty...@gmail.com> wrote: >Pentax as much as says that the 1.7x auto focus adapter shouldn't be >used with any lens slower than f2.8. But I had good luck with it using > >the A*300 f4.0 on even such enchant film bodies as the ZX-5n. I expect > >it depends more on the low light capabilities of the camera itself. >However that teleconverter seems to have electrical problems that make >it more problematic. > >On 12/1/2013 3:45 PM, Kenneth Waller wrote: >> Max aperture 4.5 or faster would be a no go for me. >> >> >> -----Original Message----- >>> From: Alan C <c...@lantic.net> >>> Subject: Vivitar 1.4x Auto Focus Tele Converter for Pentax >>> >>> Has anyone tried this tele converter? >>> >>> >http://www.adorama.com/VV14XP.html?utm_term=Other&utm_medium=Affiliate&utm_campaign=Other&utm_source=rflaid65093 >>> >>> Alan >>
I've use the Pentax 1.7x TC with a 400mm f/5.6 and, in good light, it worked fine. And on a K10D no less! I also own the Tamron 1.4x TC and it works great with screwdrive AF lenses. Cheers, —M. \/\/o/\/\ --> http://WorldOfMiserere.com http://EnticingTheLight.com A Quest for Photographic Enlightenment -- 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.
