It's the effective ap. The K3 displays and meters to the effective ap. in other words wide open with the converter and 16-50/4 is f5.6
Paul via phone > On Nov 9, 2014, at 8:18 PM, Ken Waller <[email protected]> wrote: > > Thanks Paul - >> I don't think I've shot at an ap smaller than f8 > > I assume that is f8 as set/indicated on the lens and not the effective > aperature as a result of the convertor. > > I'm interested, as you can see, as I'd like to be able couple the convertor > to my 600 and don't want to spend the money if AF won't work with the smaller > aperatures of that lens - I already have both the A 1.4XL & 2.0XL convertors > and that lens becomes handicapped with those convertors on action shots with > that lens. > > > Kenneth Waller > http://www.pentaxphotogallery.com/kennethwaller > > ----- Original Message ----- From: "Paul Stenquist" <[email protected]> > Subject: Re: PESO - A Kiss for Mom > > >> Hi Ken, >> The only autofocus problems I've seen have been due to electronic contact >> glitches -- everything has to be spotless. However, I don't think I've shot >> at an ap smaller than f8. Will give it a try next time. >> >> Paul via phone >> >>> On Nov 9, 2014, at 7:22 PM, Ken Waller <[email protected]> wrote: >>> >>> Cute capture Paul. >>> >>> Have you run into an aperature that causes the AF to not focus with the DA >>> convertor? >>> I believe that the old 1.7 AF convertor had a limit for AF to operate. >>> >>> Kenneth Waller >>> http://www.pentaxphotogallery.com/kennethwaller >>> >>> ----- Original Message ----- From: "Paul Stenquist" >>> <[email protected]> >>> Subject: PESO - A Kiss for Mom >>> >>> >>>> K-3, DA* 60-250/4, DA1.4X Converter, 350mm, f5.6, 1/800th, +0.3 exposure >>>> comp, ISO 1600 >>>> >>>> http://photo.net/photodb/photo?photo_id=17900593&size=lg > > > -- > 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. -- 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.
