Thanks for responding, Boris, Bob S. and Steven L.

After testing all my lenses, I suspected there was a problem with the
FA 50/1.4, not the camera. The results with my other lenses were from
excellent to damn good, including the 31 ltd. where I thought I saw
the problem first.

Today I got the opportunity to test-shoot with another FA 50/1.4, and
the difference was astonishing. Mine has been delivered to Pentax
Norway for recalibration, and the K10D is definately out of suspicion.

Jostein


On 12/3/06, Jostein Øksne <[EMAIL PROTECTED]> wrote:
> Gang,
>
> Given the AF cameras you have owned yourself, how much mis-focusing
> would you consider normal for a given camera?
>
> I remember there has been occasional discussions on back-focusing with
> some models before. Currently, I am beginning to worry that my new
> K10D may actually have a front-focusing problem with large-aperture
> lenses, but I'm not really sure what to expect.
>
> I'll do my best to test it and compare with my *istD, but I'd be
> grateful for any input you have on what to expect.
>
>
> thanks,
> Jostein
>
> PS.
> I will test with these lenses: FA 31/1.8 ltd, FA 50/1.4 and Sigma EX
> 70-200/2.8. Possibly also the FA* 400/5.6 even though it's not
> large-aperture.
>

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