P3D B/W to color?

[LSmart@xxxxxxxxxxxxx (Smart, Lattie MD06)]

Dear "cronies:"

Got an interesting message from someone who is interested in stereo and
photo process in general: he posed this off-topic question

>Ah, this is a little off-topic, but I thought I'd try.

Have you or any of your cronies ever heard of a photographic add-on for
cameras and projectors called something like "Abtography"?

This was a filter and diffraction grating setup which allowed you to
encode
a color image on black and white film. If you had the corresponding unit
for the projector, you could recover color. If not, you saw black and
white.

Just curious...

Bob>

Anyone know of this? I think he works in the sciences.
I told him I was only familiar w/ the stereo Chromascope.

LS

PS: BTW: I remember see a facinating early color process in the Time/Life
photo series. It created an alluring, illusive, iridescent color effect (not unlike
a modern hologram) on metal plates. I think the example photo was of
a colorful parrot. Does anyone know of this and where I can research it?


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