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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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