infrared film


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infrared film

[¦in·frə¦red ′film]
(graphic arts)
Film that is sensitive to wavelengths in the near-infrared region.

infrared film

Film carrying an emulsion especially sensitive to “near infrared.” The film is used for tasks such as camouflage detection to distinguish between living vegetation and dead vegetation or artificial green pigment. The film also is used to photograph objects through haze because of the penetrating power of infrared light. Infrared film can also distinguish between aircraft that has no fuel in it and that which is fueled, as the latter will be cooler than the former and this will show up in the film. See also near infrared.
References in periodicals archive ?
She added, "We haven't tried observing these shrimp with infrared film because no animals are known to detect those wavelengths.
Exposure reproduces the ethereal glow of black & white infrared film, and now color infrared.
Infrared film, however, is more sensitive to the full visual spectrum of light, extending on the light chart all the way from ultraviolet to near and far infrared.
As a result, traditional photographic techniques typically select a point in the midrange of the infrared film response to set a focus.
3 The dynamic range of digital image sensors exceeds the dynamic range of infrared film, thereby allowing a single image to include more precise information, especially in the fog and saturation regions that correspond to film.
4 The spectral range of infrared film is limited to wavelengths below about 900 nm (at around 850 nm, the film's sensitivity to light begins to decrease significantly), while digital sensors extend beyond this limit to wavelengths of about 1100 nm.
The team proposed to virtually recreate the murals using digital images derived from color and infrared film.
The multimedia offering is rounded out by several imaging and input devices including a 2700 dpi (dots-per-square inch) infrared film scanner that can simultaneously hold six film strips and two types of portable keyboards designed for the Palm Pilot (a micro-sized clip-on and an ultra-slim foldable).
But he had a surplus nosiness that took him away from social compacts into movie houses, where he spied on lovers by means of infrared film, in the process creating a whole new category of voyeurist imagery.
The information is based on aerial photographs taken with infrared film.
Other professional features include a 100 percent viewfinder with adjustable diopter, 1/250th second flash sync, a top shutter speed of 1/8000 second, and a new sprocketless film detection system that permits any infrared film to be used without fogging the image.
Aerial photographs use several types of film: black and white panchromatic and true-color film, which are sensitive to reflected light--like film for a 35mm camera; and infrared films, which are sensitive both to visible light and to reflected infrared light, invisible to the human eye.