micro 3D

[P3D William Carter <wc@xxxxxxxxxxxxxxxxxxx> To: photo-3d@xxxxxxxxxxxxxxx]

P.J.Homer wrote:

"Paul Kline wrote about the posibility of using polarised light for single lens 3-D with full colour." ..."The polaroid method would only be of use for getting a very small base for close ups though because you still need a conventional stereo camera set up to record the images once separated by the filters."

How about:
A. (preferred) Positioning the camera lenses directly above (behind) the oculars? Or,
II. Removing the lenses and oculars and focusing directly on the film plane?

Most 'scopes have sufficient room to place the "analyzing" filters adjacent to the back side of the L-eye/R-eye prisms. A good "universal" position for viewing or picture taking.

Also, the polarizing filters should be placed in the condenser's filter tray such that they are both orthagonally opposed, and at 45 degrees to the prism axis. Otherwise these (prism) reflective surfaces will negatively effect the polarization at or near 90 degrees to it. (eg. L-eye see, R-eye no)

A problem may be encountered in using polarization as a way of discriminating L/R views from light projected through a translucent subject. If the subject introduces some polarization then it will also introduce rivalry.

This process (sans camera) was first introduced in the '20's by a guy named Schulman, and is currently marketed, in an anaglyphic version, by Edge Scientific.



--
*** Note Change of Address ***
wc@xxxxxxxxxxxx
37deg 39.09'N x 122deg 29.56'W x 90'MLLW 




------------------------------