Setting the stereo window

[P3D allan carrano <allan.carrano@xxxxxxxxxxxxx>]

     >>Allan Carrano writes:
     >>
     >>I would have thought the frame apertures would be spaced slightly
     >>closer than the lenses, so the left eye (lens) would see more of
     >>what's on the right and the right eye (lens would see more of what's
     >>on the left, as with the real world "window reality check" described
     >>above.
     >>
     >>I even looked up John Bercovitz's web reference for the diagram of 
     >>the apertures separation relative to the lenses, and sure enough the
     >>apertures are shown to be farther apart.
     >>
     >>What am I missing?
     
     >Remember that the images are *upside down* on the film plane, so they
     >are left-right reversed in the diagram.  Left side of 'reality' is .
     >focused on the right side of the aperture.
     >
     >-Greg
     
     NOW I GET IT! --- That's how my Realist, BY DESIGN, masks me down to a 
     7 ft. window to start with.  Then, any mounting adjustments I make on 
     individual slides will deviate from that starting point.  Thanks, 
     Greg.
     
     Allan 


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