IR at Night

[Andy Finney <andy@xxxxxxxxxxxxxxxx>]

Following from:

i wonder if any of you could possibly give my some tips about using kodak
hie at night? i will be taking photos of lit buildings and suchlike. i do
not want to use flash. i will obviously have the normal tripod and cable
release for timed exposures, and will be using an R25 filter.

thanks in advance for any help

stephen ireland


A couple of points. Building illumination is often done with lights 
with discontinuous spectra so it is possible that there will be an 
uncertain amount of infrared in the light - even almost none in some 
cases.

Secondly, the opposite applies as well. Some buildings will be 
illuminated by near-infrared security searchlights and floods which 
might appear in unlikely places in your shots. Ideally, take a CCD 
camera with an infrared filter along and check for these things.

Don't forget to check the film data for reciprocity failure.

Andy

www.atsf.co.uk/ilight/
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