Re: SL3D per John B

[P3D John W Roberts <roberts@xxxxxxxxxxxxxxxxx>]

>Date: Sun, 25 May 1997 19:44:50 -0500
>From: P3D john bercovitz  <bercov@xxxxxxxxxxx>
>Subject: SL3D per John B

>The neat thing about split-aperture SL3D as done by Carter or 
>Songer is that you can change the separation of the centers of 
>perspective merely by changing the diameter of the opening of the 
>camera's original iris.  If you stop all the way down, you still 
>have two little D-shaped apertures which are very close to each 
>other.  So as you get closer to an object, and so need more depth 
>of field and hence a smaller aperture, you also reduce the 
>separation of the viewpoints which is also necessary to keep from 
>having too much on-film disparity in the stereo pair.
 
Does that mean Cousin Seymour is barking up the wrong tree with his
SP3D (single pinhole 3D) research? ;-)

John R


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