Having read this thread, I can only conclude that either I am dof or there
is some some trick to being successful with this procedure.
Last week I decided to fine tune my identifiable lenses on the K7. I used
Bob Atkins grid, set the lenses at their widest aperture & worked as close
as I could get. With each lens, I took shots at -10, -5, -2, 0 +2, +5 &+10.
Well, with all lenses, there is absolutely no difference between the shots.
OK, so I figured it was because they are slow consumer lenses and decided to
try it with my Super Tak 50/1.4 - same result.
I read on the web that the "apply one" settings can override the "apply all"
settings and vice versa so I tried setting both with the same value. Still
no luck.
I also came across a program called "PK_Tether" which allows one to control
the camera from a PC. Apparently it allows adjustments from -100 to +100! I
downloaded it & it connects to the camera OK but am a bit reluctant to try
it. Any comments on that?
Alan C
-----Original Message-----
From: Paul Stenquist
Sent: Saturday, December 21, 2013 7:08 PM
To: Pentax-Discuss Mail List
Subject: k-3 fine focus adjustment
I finally got around to running some of my autofucus lenses through fine
focus adjustment. The DA* 50-135 and DA* 60-250 were just about right on.
Splitting hairs, I went for +1 on each. The FA 35/2 required +2 as did the
FA 50/1.4. The our of the box focus was much closer than any other Pentax
digital I've owned. Each generation was an improvement over the last.
Paul
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