P3D Double Depth

[Project3D@xxxxxxx]

Abram Klooswyk wrote:
 > (...) remove a center strip from the mount(...)
 > bringing the viewing stereowindow closer.
 > This means in fact for the 5P system not a 1/30 base but a 1/15 base.
 
To which Bob Maxey replied: 
 >If one is modifying the separation in the mount, to
 >me, this is NOT a modification of the Stereo Base.

and Abram Klooswyk acknowleged with:
 
 You are right, I'm sorry for a too hasty and therefore incorrect
 formulation. I meant: 
 If you use double depth mounting (as indicated) you can use a depth
 range in the photography, which equals not a 1/30 base but a 1/15 base.  >>

And I think that I should jump in to these "Double Depth" discussions to point
out that the system (which is, in fact, what the Realist "medium" and "close"
mounts were all about, anyway) only works IN PROJECTION if the projectionist
doesn't immediately assume that the author cannot mount properly, and racks
the projector to superimpose the frames on the screen... Of course, it would
be fine if the projectionist put a 50mm separation to the infinity points.
(but they rarely do!)

Bob Aldridge


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