IR LEDs and remotes (was: Myth of Heat exposing IR film)

[Clive Warren <Clive.Warren@xxxxxxxxxxxxx>]

At 2:29 pm -0400 17/6/99, Luvdove6@xxxxxxx wrote:

>> Weird thing - when my (blue) mobile phone was shot with IE (w/4Y
>>  filtration)/developped E-4 it turned out red.....
>
>This might be a really dumb question but I was thinking...  since our remotes
>for our TV's or VCR's are done with infra red rays and infra red sensors...
>if I took a picture while hitting a button on the remote.. would the rays
>show up?


Point a camcorder at a remote and you can see the IR LED light up.  I guess
that in the dark you may get some small illumination from it - many small
IR video cameras use IR LEDs as a light source but are only able to operate
to a range of about 3M.  Have toyed with the idea of using a small bank of
IR LEDs as a light source for HIE film but I would imagine that the light
output is too small.

Better to use electronic/bulb flash or a tungsten light with IR filters.

All the best,

            Clive  http://www.cocam.co.uk


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