Re: Need help with new lens -- getting conflicting views on lens to camera datatransmission

[Alan Chan]

It's just the way 'A' lenses were designed. When the lens was set to 'A', the circuit will be closed and the camera will determine the maximum and minimum aperture based on the arrangement of the contacts on the lens mount. F & FA lenses have chips inside to tell the camera what apertures they are so they work even when the lens was set to other than 'A'. But then again, even with F or FA lenses, the displayed aperture might not be accurate (could be 1/2 stop off when the lens was set to non-A). It has to do with the QC tolerance.

regards,
Alan Chan

Yes, that works (Program Mode), but it's just a mechanism on the camera and
on the lens, to close down the aperture for a shot. This lens has one
contact. I don't know what it does. But it will not display the f-stop in
the viewfinder or LCD screen while in Av or Tv mode. I looked at the negs
(data imprinting does come in handy!!), and in program it tells you, but in
Tv or Av it does not. Just an F--. I talked to another member off-list who
has this lens, and has used it with the MZ-S and the PZ-1p, and they get the
same result.

So, it works, but doesn't display the information I would have thought, and
others thought, it should. It doesn't cripple the lens or camera, but it's
nice to see that information.

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