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Re: Single-lens Stereo


  • From: P3D William Carter <wc@xxxxxxxxxxxxxxxxxxx>
  • Subject: Re: Single-lens Stereo
  • Date: Wed, 15 May 1996 10:07:30 -0700

Robert, you wrote:

"The pictures were amazing because, without the anaglyph glasses the 
print looked like a normal 2D with slightly off-color cast.  But for the 
most part, viewable in either 2D or 3D."
"He said he was able to download instructions and info from the 'web but
couldn't recall the URL.  Can anyone be of help here?  I would like to 
try this on SLR and 8mm Video, though there may be parameters of which I 
am ignorant, making video impractical."

The stereo device you refer to was first introduced by a guy named Jimmy 
Songer, back in the early '70s. It was later marketed (just as soon as 
Jimmy's patent expired) in a badly misconcieved form by Tiffen, under 
the name "Q-DOS".

This form of SL3-D is implemented by dividing a lens aperture (usually 
where the shutter or iris is/are) into left and right halves using some 
color and it's complement. Traditionally, these have been red and cyan. 
The reason being that red and cyan each transmit about the same amount 
of visible light. And, much like a ship or airplane, red is left, and 
cyan is right. Further, by selecting a pair of two-color separation 
filters eg. Wratten No.s 44a and 25, you can avoid much of the 
"off-color cast" your friend encountered. But, you'll need to avoid 
shooting anything bright red.

The rest is to simply open 'er up, cut and paste, and close. I use 
leather punches to cut with (not necessary), and contact cement to paste 
with (what ever). 

I feel much the same about SL3-D (incidentally, that's a term I coined 
severall years ago) as Dr. T. seems to feel about his Realists. It has a 
great many advantages over multi-lens 3-D, and it's much better than 
sliced bread. And, like Dr. T., I would look forward to assisting you in 
any way I can. 




 

-- 
                wc@xxxxxxxxxxxx
    37deg 39.09'N x 122deg 29.56'W x 90'MLLW





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