Mark, I've run into this before. The wording in the literature is awkward. By lens, the converters are marked x - not usable, o - usable, and o* - better performance can be obtained This should have been translated "Better performance will be obtained!"
With the A*300/2.8, the 1.4xS and 2xS are marked o - usable The 1.4xL and 2xL are marked o* - better performance can be obtained! With the F*600/4, the 1.4xS is marked x - not usable the 2xS is marked o - usable the 1.4xL and 2xL are both marked o*...better performance can be obtained. As far as I can tell,the "L" converters are best for the exotic glass. Regards, Bob S. On 1/29/07, Mark Cassino <[EMAIL PROTECTED]> wrote: > By chance I took a look at B&H's page on the Pentax 1.4x-L teleconverter > today. There's a list of compatible lenses, but several are marked as > "Fits, but better performance can be achieved with other versions." I > assume these are lenses that would work better with the 1.4x-S converter. > > I was surprised to see the A* 400 f2.8, F* 600 f4, and A* 600 f 5.6 on > this list. Oddly, the FA* 600 f4 is not so noted. > > See - > > http://www.bhphotovideo.com/bnh/controller/home?A=details&Q=&is=USA&O=productlist&sku=40608 > > and click on the features tab. > > I mostly use the 1.7x AF adapter with my A* 400, but bought the 'L' TC's > for use with it. Any thoughts on whether the S is really better with > some of the long glass? > > - MCC > > -- > - - - - - - - - - - - - - - - - - - - - > Mark Cassino Photography > Kalamazoo, Michigan > www.markcassino.com > - - - - - - - - - - - - - - - - - - - - > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
