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need heat absorbing filter info
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Jim
Sep 2, 2004, 5:56:20 AM9/2/04
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Can someone help me with some specific information I need concerning the
heat absorbing filter used in Kodak slide projectors, or failing that, the
heat absorbing filters used in enlargers?
heat absorbing filter used in Kodak slide projectors, or failing that, the
heat absorbing filters used in enlargers?
I need to know the infrared cutoff wavelength of these. I suspect that
these are basicly a "low pass" filter for all UV and visual wavelengths, but
where would the cutoff be: 880nm?, lower, or ??
thanks
Jim
jb...@cfw.com
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