I've never heard of that, and none of the F series lenses I own,
admittedly a relatively small subset works like that.
On 12/19/2017 3:38 PM, Daniel J. Matyola wrote:
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!
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