“I would think that this issue of equivilant aperature determination had come up before.“
It has. It is a rather well-understood situation. Have you checked out the comparison table?. It’s old but. For me at least, accurate enough.
Just because it’s old is no reason to think that there can’t be trust. .
But I’m with you on “trust but verify”. I verify by looking at negatives (or Polaroids back in the olden days) rather than calculating and extensive testing.
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