
Tungsten film is used for studio photography. The color temperature of average daylight is 5,000 degrees Kelvin. The term "tungsten" refers to a color temperature of 3,200 degrees Kelvin. Therefore, tungsten film is designed to be used under studio lights of the same color temperature, called tungsten lights. If you use tungsten film outdoors instead of under tungsten lights, your photos will have a blue cast. Similarly, if you use a different type...