Color balance is normally reserved to refer to correction for differences in the ambient illumination conditions.

A consequence is that their validity as physical models is dependent on the illumination conditions.

It is part of the D series of illuminants that try to portray standard illumination conditions at open-air in different parts of the world.

The illumination conditions and down-slope movement of eroded material exposing fresh rock also contribute to the bright appearance.

A further notable repetition, aimed at evaluating the dependence of a cesium film's photoelectric emission upon illumination conditions.

The visual evaluation of mottling is very subjective, as it depends on the illumination conditions, the observing distance and the viewing angle.

The uncontrolled images were taken in varying illumination conditions; e.g., hallways, atriums, or outside.

The 3D image was taken under controlled illumination conditions.

Human vision, under common illumination conditions (not pitch black nor blindingly bright), follows an approximate gamma or power function.

These terms are important because they allow the albedo to be calculated for any given illumination conditions from a knowledge of the intrinsic properties of the surface.