Descriptors | Sensitometry, Film speeds, Still photographic film, Photographic film, Photographic materials, Light-sensitized materials, Photographic lighting equipment, Lamps, Artificial daylight lamps, Natural lighting, Standard light source, Filters (optical), Tungsten lamps, Floodlights, Spectra, Lighting levels, Light distribution, Optical phenomena, Tolerances (measurement), Sensitivity, Exposure time, Mathematical calculations |