P3D Re: Instant Anaglyphs Still?

["William J. Carter, Ph.D." <wc@xxxxxxxxxxxx>]

At 09:13 PM 8/12/98 -0600, Tom Deering wrote:

>How can this thing produce a "full colour anaglyph?"  
<snip>
>Here's why:  The red filter passes ONLY red, and the green filter passes
>ONLY green.  So no matter what, you don't get any natural colors, only
>green and red.  Definitely not a color anaglyph.  Or any other kind.

Which is why Red and Cyan (not Green) are used. A color and it's complement
will give you all the colors. The old Technicolor two strip cameras ran with
Red and Cyan dichroics, for example. The colors Red and Cyan were chosen, as
opposed to, say, green and magenta, or blue and yellow, is because Red and
Cyan pass more nearly the same amounts of light.


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