Alan wrote:

AC> I do not know if I understand correctly. As I can observed, the aperture
AC> read out has no effect on the actual exposure accuracy. It is just a value 
AC> "guessed" by the camera and displayed in the viewfinder LCD. The chosen 
AC> shutter speed is determined solely by the EV level and position of the 
AC> contact on the variable aperture resistor. Due to the mechanical 
AC> manufacturing tolerance differences, some cameras or lenses may be off a 
AC> little bit.

  Indeed you are right. KAF mount still relies on the mechanical
  coupling to read the aperture even if though this is also
  transmitted digitally.

  Servus, Alin
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