P3D Photographing Anaglyphs

["H a r o l d B a i z e" <baize@xxxxxxxxxxxxx>]

Michael wrote:
>>I was just looking at my anaglyph poster of the Grand Canyon and got to
>>wondering...if I placed my red/blue glasses over the lenses of my stereo
>>camera...and then shot a photograph...would it come out as 3d in my
>>slides?

Then Dr.T responded:
>If you do what you described and then use a viewer to view the slide, you
>will get a still see depth but you will get a nice feeling of retinal
>rivalry.  Or you can project them and use regular anaglyph glasses to view
>them (no need for polarizing filters/glasses or silver screen)

I don't believe the retinal rivalry would be any different than viewing 
the original anaglyph, then again retinal rivalry is one of the reasons
anaglyph is not preferred. If you photograph a gray scale analgyph through 
red/blue glasses on a stereo camera you should end up with a stereo pair 
with one chip in red/black and the other in blue/black (probably 
with some ghosting). I did a similar thing a few years ago. I photographed 
a George Coates production that involved live actors and a polarized 3-D
projected virtual stage set. I just put polarized glasses in front of my 
Kodak stereo and held the shutter open for about 3 seconds. It worked. 
The polarized filters gave each lens what the human eye would see when 
wearing the 3-D glasses. It should work the same with anaglyph, only the 
resultant image would appear as a monochrome stereo image with a slight 
purple tint to the white areas. If you use black and white film 
you can avoid the purple haze :-) and the retinal rivalry.

Harolddd


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