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A. Direct light
B. Reflected light
C. Resulting ambient light
Color and Light
The color of light depends partly on the process that generates the light. For
example, a tungsten lamp casts orange-yellow light, a mercury vapor lamp
casts cold blue-white light, and sunlight is yellow-white. Light color also
depends on the medium the light passes through. For example, clouds in the
atmosphere tint daylight blue, and stained glass can tint light a highly
saturated color.
Light colors are additive colors; the primary light colors are red, green, and blue
(RGB). As multiple colored lights mix together, the total light in the scene
gets lighter and eventually turns white.
4982 | Chapter 18 Lights and Cameras