Response to Infrared film

I'm not sure what it was originally designed for, but I believe it was used in WWII from airplanes to detect camoflauged installments and sites as the heat produced by the machines registered at a different tone than the trees around them. As for use now, be sure to use a proper filter (a 25 red will work) and be ready to bracket and willing to perhaps lose a roll or two to testing- it's tricky stuff. Also try to load/unload it from your camera in complete darkness or at least in subdued light. Even exposing the cannister to light can alter your film.

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