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Re: [OM] [OT] infrared flash bulbs?

Subject: Re: [OM] [OT] infrared flash bulbs?
From: Andrew Gullen <andrew.gullen@xxxxxxxxxxxx>
Date: Thu, 03 Jul 2003 21:54:07 -0400
AHA! Time to cut an IR filter to slide into my T-28 heads. This would work
for a T-32 as well, of course.

Thanks, John!

Andrew

> Date: Thu, 03 Jul 2003 03:49:30 -0500
> From: "John A. Lind" <jlind@xxxxxxxxxxxx>
> ...
> You can make your own IR flash from a standard electronic flash very
> easily.  Simply cover the flash tube cover with a piece of completely
> exposed and developed slide film (should appear to be completely
> black).  These can be had easily by shooting slide film and keeping the
> piece(s) of leader they return with the slides.  Slide film, after
> developing is specifically designed to be very nearly completely
> transparent to IR, without regard to the density of the visible light image
> on the slide.  Why?  If slides didn't allow transmission of nearly 1000f
> IR, they would melt and fry in a slide projector.


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