P3D full color anaglyphs

[Ray Zone <r3dzone@xxxxxxxxxxxxx>]

Hi Tom (Deering),

As promised, I have sent you three images which demonstrate full color, or
"polychromatic" anaglyph.  The first image is from Edwin Land's May 1959
article in Scientific American titled "Experiments in Color Vision." The
image is reproduced on the cover of this issue and demonstrates how Land
reproduced the full color image shown in the photo by the use of red and
green filters, black and white film and projection using red and white
light.  The caption for this photo reads as follows:

"Colored objects in the top picture on the opposite page were photographed
with the special dual camera which appears at left.  Here the two
ground-glass screens of the camera are left uncovered to show the one image
is photographed through a green filter and the other through a red filter.
The images are photographed on ordinary black-and-white film; then
black-and-white positive transparencies are made from the negatives.  In
the bottom photograph the "red" transparency is projected through a red
filter and the "green" without a filter.  When the two images are
superimposed on the screen at right, they reproduce the objects in a full
range of color."

The second image is the cover of the April 1998 issue of the Journal of 3-D
Imaging published by The Stereoscopic Society in Great Britain.  This
four-colour anaglyph image of the Sydney Opera House was produced by 3-D
Images Ltd. from a 3-D photograph by David Burder.

The third image is a page from the WildC.A.T.s  "color 3-D" comic book that
I produced for Image Comics in 1997. This page is from one of twelve
full-color anaglyph comic books published by Image in 1997-98.

Both of the color anaglyphs show the presence of additional colors beyond
that of red and blue/green only.

There is a technical history of the full color or "polychromatic anaglyph"
along with numerous examples on my webpage.

Now, I am going to give you your "out" Tom.  I don't really need the $100.
But I AM passionately interested in the anaglyph and all it's variants
(like hidden or "decoder" images which also use subtractive or additive
filtration to work).

Here is your "out":  When you look THROUGH the anaglyph glasses  you are
really seeing a primarily monochromatic or Black and White image since each
color is selecting or passing (approximately)  one half of the color wheel
that is opposite to the half that the other (complementary color) sees.
WITHOUT the glasses, however, you are looking at a full-colour image.

Over the years,  hundreds of full-color anaglyphs have been produced by
many stereographers such as David Burder, Tony Alderson and Steve Aubrey,
among others,  and they have been published in magazines such as Paris
Match, Bravo, Disney Adventures and, most recently, in the August 1998 Mars
3-D issue of National Geographic where the images are in full color
anaglyph and use 4-color printing (CMYK) for reproduction in the magazine
and not just a 2-color scheme only.  This is how I converted the Nissan
Pathfinder ad in that issue to "polychromatic anaglyph" using Adobe
Photoshop has my software.

If I go on here at some length, it is because I love the anaglyph display
form for stereography.  Despite its limitations it continues to be the most
widely reproduced form of stereographic display (9.5 million copies of 3-D
National Geographic) and, very likely, will continue to be so.  It offers
technical challenges and simple charms that are unique and inherent in its
form.

Sincerely,

Ray '3-D' Zone

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