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BTFR question

  • From: "David J. Romano" <romano@xxxxxxxx>
  • Subject: BTFR question
  • Date: Wed, 26 Apr 2000 23:46:06 -0400
I have a question regarding the between the film rails placement of the
IR filter. Don't TTL metering systems measure the light reflecting off
the film plane (OTF)? If so, wouldn't the meter reading be different
with the filter placed between the rails as opposed to in front of the
lens because the light would then pass through the filter twice? Or, am
I wrong, and the camera's meter does not read light reflected off the
film plane?

David

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