P3D Re: Instant Anaglyphs

[Tom Deering <tmd@xxxxxxxxxxx>]

Brian Reynolds asked:

>Assume I built a box camera (to take a Polaroid 4x5 film holder/processor)
>with two pinholes (or lenses) at the proper distance (lets say 60mm).
>If I then covered the left pinhole with a red filter and the right with
>a blue filter and shoot with color film, will I get a proper anaglyph
>(i.e., not pseudo)?

It sounds like a fine idea, except that it won't work.  Ain't it always
like that?  You wouldn't get a good anaglyph, stereo or pseudo.   Using
this scheme you would obtain color separations, not anaglyphs.

In other words, imagine what happens if you shoot a photo of a red and
white striped ball.  To the  green lens, it looks BLACK and green!   To the
red lens, it's solid red.

And it doesn't matter because, the images would not be oriented correctly,
as you guessed. (Realist format users are frustrated by their inability to
freeview a film strip for the same reason.)  Then there is another problem.
This arrangement would yield two images spread far apart, instead of one on
top of another like an anaglyph.

I considered the same idea, until I thought about it more.  Dang, it was a
good idea til then.  :^)

Tom



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