I believe that, on some of the older lenses, like the "F" series, the aperture ring had to be set in the "A" position in order for the camera to be able to autofocus the lens.
Dan Matyola http://www.pentaxphotogallery.com/danieljmatyola On Tue, Dec 19, 2017 at 3:32 PM, mike wilson <m.9.wil...@ntlworld.com> wrote: > Why would manual aperture setting affect the ability to autofocus? > > > On 19 December 2017 at 13:23 "Daniel J. Matyola" <danmaty...@gmail.com> > wrote: > > > > > > You guys are all snarter than me. > > > > A while back, I had an older lens on my K-5 IIs that refused to focus. I > > struggled with it quite a while before it dawned on me that I had > neglected > > to place the aperture setting on "A" > > > > D'uh! > > -- > 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. > -- 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.
