Rick, this an entirely different thing. That special film or lens filters only pick up the "near infrared". they are cool looking sometimes but not the same thing we are talking about here.
Dana
PS, I love "Instructables" too.

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"Political Correctness is a doctrine, fostered by a delusional, liberal minority and rabidly promoted by an mainstream media,which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."