P3D Re: Full colour from two

[Tom Deering <tmd@xxxxxxxxxxx>]

>But for the skeptics here's a simple test:  Take Mr. Land's polarizers out
>of your stereo projector and replace them with a red and cyan filter.
>Project a number of color stereo slides through these filters (you won't
>need a silver screen now).  Do you see any additional colors other then red
>or green/blue?

Sure there are additional colors.  You'll see reddish brown, reddish grey,
cyanish brown, cyanish grey, and black.

The point is, you won't see ALL the colors. Don't look at a slide of a
yellow schoolbus, or a purple eggplant.    Those colors are gone.

For other slides, you might be able to get away with it.  Reds and greens
are more common in faces, foliage, earth.  And greys look okay.  Just don't
try it with flowers.

By the way, you don't need to replace your polarizers with red and cyan
filters.  Who has big filters like this laying around, anyhow?  Just put
regular red/cyan anaglyph glasses on your face.  Do the colors around you
seem normal?

>Edwin H. Land disproved that.  The cover of the May 1959 Scientific
>American bears a full color image with the subtitle "Full Color From
>Red and White."

And as for the magic Land photo that defies physics, I am tracking that
down.  The example I've seen is an artist's rendering, not a real photo.
That's okay--the recent May issue of Scientific American shows Shannon
Lucid peering out of Mir, but that cover was doctored, too.  And they
didn't mention that fact anywhere in the issue.

Cheers,

Tom



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