P3D Anaglyph filter material

[Ole Hansen <oha@xxxxxxxxxx>]

Jim Crowell <crowell@xxxxxxxxxxxxxxx> wrote:
>> The problem is the red and cyan filters. They must be matched very
>> accurately to reduce colordistortion in coloranaglyphs and to give
>> pure grays in black/white anaglyphs.
> The best source I've found are theatrical supply shops. Good ones sell
> a very broad selection of color filter materials for spotlights. The
> store that I bought from back in Berkeley had a little booklet with
> small samples & graphs with the spectral transmittance of each
material!

Thanks a lot for the advice Jim, but I tried that out, and the spotlight
filters I could get hold of were not plane-parallele, and that made them
useless. You seem to get a better quality in The States ;-) Hollywood
pressure I presume ?
I wonder if one (or more) of the subscribers to this list have tried
(found)
a Kodak Wratten filter combination ? It will be a bit expensive, but if
it
works, it is a possible but physically sensitive solution to the
problem,
unless one puts the filters between glas.
regards - Ole Hansen


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