Re: Infrared Film Spectral Response

[gmm25@xxxxxxxxxxxx]

whoops, of course humans do not EMIT 1500nm light, but they do reflect it
pretty well, so they are "secondary emitters", even when shielded with
clothing, the light will pass right through on the way in, bounce off and come
back,
sorry for the confusion
George

George L Smyth wrote:

>
> > To: infrared@xxxxx
> > Subject: Re: Infrared Film Spectral Response
> >
> > uses for 1500 are varied, for one, near infrared is emmitted by humans in
> > copious amounts,
>
> Only if they're on fire.  "Temperatures below 482F cannot be photographed
> directly by using self-emitted energy as the source of exposure." - Kodak
> pamphlet P-570
>
> george
>
> ---

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