Making your own wratten 89 equivalent filter?

[Magnus Slayde <magnus13@xxxxxxxxxx>]

I remember reading awhile back that someone was saying that a certain 4x5
film if exposed for a certain ammount of time then developed would make a
good infra-red passing filter for light sources? I recently acquireda
10/20/30 Watt halogen video camera light with a hot shoe mount, I turned the
mount around backwards so that it would fit my PENTAX super ME 35mm. Now I
have this wild looking camera rig with a batery powered spot/flood attached
to it, I wanted to get a filter so I would only pass infra-red for some
night time wildlife shots using HIE, does anyone know how to make the
makeshift filter?


E-MAIL: magnus13@xxxxxxxxxx
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     Caffeine! My lord and master has restored my powers so that I may serve
him.

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