On 12/14/2009 9:08 AM, Derby Chang wrote:
Hi Boris
Yvon has this nifty chart you can download and print on card. Won't
solve your problem but you can quantify it.
http://pentaxdslrs.blogspot.com/2008/06/part-1-autofocus-adjustment-for-pentax.html
Well, I did print the chart, but forgot it in the office today. Instead,
I took the camera and made a number of shots close to minimal distance
of focus under conditions similar to those described in the procedure -
printed text, roughly 45 deg incline, few book shelves, a table
calendar, more printed text. When I take my time and concentrate on what
I see in the viewfinder - it comes out spot on in focus. Aperture being
f/1.8. Since I am shooting handheld, I cannot see any consistent front
or back focus behavior - I just hit the focus point.
Given the fact that the screen was installed by local Pentax service,
which I do hold in certain esteem, it is only getting more interesting.
May be it's been my mistake. May be the viewfinder magnifier that I have
is not providing enough magnification...
The hunt goes on.
Boris
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