What if I take an M or K series lens and modify it for matrix metering per
Mark Roberts web site? I make sure that there is still metal contact on the
one "pin" location as there would be on an A version when the camera is in
the A position. I then set the lens to f22 and treat it like a lens set to
the A position. Would this work?
No. The reason is that the diaphragm actuator is not linear on pre-A K mount lenses.
http://www.bdimitrov.de/kmp/technology/K-mount/Ka.html
regards, Alan Chan
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