Because cinematography by infrared light has had limited pictorial use, this will be a brief review. For more information, refer to Kodak publications number N-17 "Kodak Infrared Films" and M-28 "Applied Infrared Photography." Infrared for photographic purposes is defined as that part of the spectrum, approximately 700 to 900 nanometers, which is beyond the visible red, but not as far as would be sensed by humans as heat.
All infrared films are sensitive to heat and should be kept refrigerated before exposure and during any holding time before processing. While no longer listed as a regular catalogue item, Eastman Kodak still manufactures a B & W
infrared sensitive film, Kodak High-Speed Infrared Film 2481, and a modified color sensitive film, Kodak Ektachrome Infrared Film 2236. Both of these films are on Estar base. Before deciding to use either film in a production the manufacturer should be contacted regarding its availability, minimum order quantities and delay in delivery.
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