After reading discussions regarding this problem, I did my tests using an
engineering scale because I have several and because they're triangular and
stand up by themselves.
The scale was on a slant relative to the axis of the lens.
Distance to scale was adjusted according to focal length for each lens.
A piece of half black half white cardboard was set above the 15mm scale
position, normal to the lens axis.
All were tested wide open.
All done using center sensor only.
All my AF lenses appeared to be spot on as to being at or damned close to
most accurate focus. (Note: most accurate focus is not at what *appears* to
be center of DOF - and it shouldn't be.)
These lenses were:
Autofocus:
Screwdriver AF
FA 31/1.8 AL ED Limited
FA 43/1.9 Limited
FA 77/1.8 Limited
DA 18-55/3.5-5.6 AL (came with first K10D)
DA 18-55/3.5-5.6 AL II (Wanted the new, improved version)
SDM
DA* 16-50/2.8 AL ED [IF] SDM (Wanted the new, faster lens, faster
AF)
Manual Focus: (adjust to green focus indicator - not screen)
A 15/3.5 (Better than the DA* 16-50/2.8 @ 16 - mine is anyway)
A 50/1.2 (Good short portrait lens)
A 50/2.8 Macro
A* 85/1.4 (Still my favorite portrait lens)
A* 135/1.8
A* 200/2.8 ED (GAWD I love this lens for hockey games!)
Am I the only person who seems to have NO focus sensing or autofocus
problem?
Regards
Bob...
---------------------------------------------------------------
"I don't mind if you don't like my manners.
I don't like them myself. They're pretty bad.
I grieve over them long winter evenings."
-- Philip Marlowe (Humphrey Bogart)
From: "David J Brooks" <[EMAIL PROTECTED]>
>I know Paul had checked his lenses and adjust for most, if not all of them.
>
> Just curious as to how many of our current K20D owners felt it
> necessary to do adjusts.
>
> And if you did adjust, did you just use the D70 test page at 30 or the
> "made for Pentax" sheet on the other forum.
>
> I'v narrowed down, my, VERY LAST CAMERA PURCHASE EVER, to a K20D or
> D700(but only when i get some real user feed back on this one)
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