The way you will be able to use K/M lenses on K10D will be the same as
on my ist-D/DS. Either DOF or Green button will close the diaphragm,
take the reading and open it again. It is in fact VERY quick and
problematic only for particuliar shooting mode.

Concerning AF sensors, it has always been like that, only the center
ones work wit manual lenses. Moreover a manual lens (or AF BTW)
mounted on the AF converter (1.7X) will only use the  center sensor.
It has always been like that with Pentax AF bodies sonce they have
more than one sensor (MZ-5 and newer).

Conerning meterin there's an even beter reason: for reliable matrix
metering, the body needs to know the minimum aperture value for the
lens. Without electronic contacts (A lenses and all AF ones) the body
has no way of knowing this -> CW and spot is the only solution.

Hope I helped.


Thibault Massart aka Thibouille
----------------------
*ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ...

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