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P3D Stereo Base Distance

  • From: "Andrea Blair" <asblair@xxxxxxxxxxx>
  • Subject: P3D Stereo Base Distance
  • Date: Wed, 05 Aug 1998 07:55:08 PDT
Can anyone tell me if I should be measuring from the front of the lens 
or from the film plane (camera) when calculating the stereo base. I am 
shooting macro with a single SLR and sometimes have 6 inches of lens 
hanging off the camera but am only 2 inches away from the subject.

i.e. For a stereo base of 1:30, you move the camera 1/30 the distance 
from the XXX to the subject. (XXX being either the front of the lens or 
the film plane)

Don't get too technical, folks. I can make the images; I'm just trying 
to get accurate information for my presentation this weekend at NSA. The 
books I have don't seem to detail this. Of, course I kinda go glassy 
eyed after too many graphs and charts and scientific formulas, so I may 
have missed it!

Thanks for your help.

Andrea S. Blair
asblair@xxxxxxxxxxx

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