Re: other infrared sources?

[Patrick Magee <pmagee@xxxxxxxxxxxx>]

On Fri, 30 Oct 1998, Neil Koven wrote:

> A security company gave me a demo yesterday on their system; part of it was
> dissecting one of their motion detectors.  Apparently the little snoops use
> an infrared wide angle beam to detect movement--as do other motion
> detectors.
> 
> Okay, what effect, if any, will this have on pictures, loading/unloading
> film, etc.  Could this explain some of the mysterious fogging I see many of
> you writing about?
> 
> Can we photograph this beam somehow?

Use your handy dandy camcorder with an 87 filter over the lens. Most
camcorders are sensitive to IR. Try it with any remote control.

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