Re: homebrew beam splitter

[P3D <JNorman805@xxxxxxx>]

      It seems to me that one problem with the proposed home-brew beam
splitter as represented by the presented schematic is that the perspectives
of the perceived images at point A and B will be identical, resulting in a
perfectly flat stereo pair.  The transmission of light (and image) goes
through the mirror to camera A, and is bounced off the mirror at exactly the
same place to camer B.  The only difference is that what registers at camera
B will be a mirror image of what's seen by camera A, so you'd have to flop
the negative or slide of camera B for proper viewing.  But that seems like a
lot of trouble to go though for a flat picture!
     Better, I think, would be to build a Wheatstone viewer in reverse: Two
mirrors (front surface, please), mounted perpendicularly to each other, with
the "V" pointing toward the subject, and each mirror reflecting its unique
image back to a camera mounted off to its respective side.  Of course, the
images would then have to be flopped for printing or projection:

                                              A -- \/ -- B
                                                     |
                                                     S

where A =Camera A; B=Camera B; S=Subject; and V represents the two mirrors
mounted perpendicularly to each other.
                                                                      Jim
Norman


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