Re: halogen lighting

["Peter Badcock"<pbadcock@xxxxxxxxxxxxxxx>]

My experience with light from a Halogen Lamp, is that it contains quite a lot of
IR in it.  Unfortunately I couldn't quantify this for you from a detailed 
spectral response point of view.  
I recently used a halogen lamp with my Hoya R72 IR filter (equiv. 89B) over it 
to illuminate myself whilst sleeping, so that I could video tape an entire night
using a 4Hr video tape on long play (giving 8hrs).  The camera had enough 
sensitivity in the deep red/near IR end  of the spectrum to capture what I 
needed, unfortunately my eyes were a bit too sensitive to the deep red light let
through by the R72 filter, so I had to wear a night mask( like they give out on 
airline flights). Mind you it was a 50watt halogen globe!

You're probably wondering why on earth I wanted to video tape myself when 
sleeping??  Well, my wife is deaf and doesn't sleep with her hearing aids in and
I have been accused of grinding my teeth at night!!  So one way to convince 
ourselves was to tape my entire slumber.  Well I can tell you that it certainly 
gave us some chilling evidence.  About an hour after I fell asleep, this spine 
tingling grinding sound accompanied by contorted lateral movements of my lower 
jaw was clearly archived on the tape.  It was rather disturbing for me to watch,
and so far I haven't continued to do so!!  It's comforting news that my 
orthodontist says he can make a plate to stop this if I like....


regards

Peter B


Now you 


______________________________ Reply Separator _________________________________
Subject: halogen lighting
Author:  <infrared@xxxxx> at INTERNET
Date:    07/4/98 22:23


i was taking a walk this afternoon and saw a sign for a really cheapo 
halogen worklight. and i`m thinking, hmmmmmm now would this work as a fake 
studio lighting? it`s only $10 and i`m thinking, hmmm light up the kittens 
and my (once-)beautiful yucca palm, with kits firmly attached of course, 
and maybe my other two cats and try some portraits.

so, how does ir film go with halogen (& indoor) lighting? a def. no-no, 
waste of time & money, or worth a shot?

siri [currently waiting for the t-max to reach a decent temp so she can 
process some films, at the mo it's stubbornly sticking to 8C which is a tad 
cold even for norway...]

mailto:sbjoner@xxxxxxxxx fone: +47 9010 4635 fax: +47 9030 6420


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