(photography) the
principal source of light in a photograph. The function of the main light is to provide the
major illumination that establishes the pattern of highlights and shadows. It's the main light is not showing on the front of the face.
n. in photography, the light which provides the
chief or
main source of illumination and
sets the
general lighting pattern or mood for a
picture, such as a portrait. The main light is also called the
key light and by itself creates deep shadows and strong highlights. It is used in
conjunction with other
lights that serve to add light to the shadows,
fill in the background, etc. The location of the main light is determined by which aspects of the
subject one wants to emphasize or display.