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[OM] Av with chipped adapters

Subject: [OM] Av with chipped adapters
From: usher99@xxxxxxx
Date: Thu, 10 May 2012 16:49:32 -0400 (EDT)
OK, this jostled my memory as a non emf chip holder.

Try this:


1---- set the aperture on the lens to wide open
2---- set aperture on the camera
3--- press the shutter button lightly to take a meter reading then set 
AE lock
-----. set aperture on lens to the aperture set on the camera
5.---- take picture.

I think this may be  an emf trick that calculates an equivalent 
exposure.    I still think the stopped down lens fouls up the metering.

  Chip off ol block  vs dazed and confused, Mike




> At least with Big-IS and Canons, once the correct max aperture is set,
> one may set the Av the actual shooting setting of
> the lens. This has no effect whatsoever on the actual exposure, per
> "First", above. But it does record that aperture in
> the EXIF, which is useful to me.

If I understand what you are saying, it does not work for me.  Av simply
does not turn around a correct exposure unless the camera aperture is
left at Max.  You can put the lens aperture wherever you want and get a
good exposure, but EXIF records max exposure from the in camera setting.
 Change the max exposure in camera, and the capture exposure is messed
up.

I seem to be missing something significant in what you are saying.
Sorry.

Joel W.

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