I know the ZX-M manual describes this.  It says that the camera will know
where the aerator ring is at in FA lens or newer.  Older A lens that are not
autofocus will not show the aperture reading in the digital display.  I'm
not sure  that all Pentax autofocus cameras will not support this or what
model it started with.  I just tested this with my PZ-1 and it does
recognize the aperture value on an FA lens off of the A position.

Dave

-----Original Message-----
From: Nenad Djurdjevic [mailto:[EMAIL PROTECTED]
Sent: Tuesday, June 15, 2004 1:10 AM
To: [EMAIL PROTECTED]
Subject: Re: A-lenses aperture indication


William Robb wrote:
> When the lens is off A, the electrical contacts are disabled, and the
> lens has no electrical communication at all with the camera.
> It's not just AF cameras. The Super Program is the same way.

Having switched to digital and no longer having any film camera bodies I
can't check this - but I could have sworn that F and FA lenses on an AF body
gave an aperture readout on the camera at all times (but A lenses didn't).

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