The general (and often undesirable) Illumination surrounding the shooting or projection area; not exactly the same as Available Light or Natural Light. Tip: use the term to ward off meddling clients, as in I can t light it your way because of the ambient light. They are likely to nod sagely.tiffaneduglossary
Existing light surrounding a subject; the light that is illuminating a scene without any additional light supplied by the photographer. Available light and existing light are two other terms that mean the same thing.
The light in the scene, as opposed to the light provided by the photographer with flash, photofloods, etc.
Existing light before introduction of any other light source, e.g. light in room created by source(s) other than projector or screen.
Light already existing in an indoor or outdoor setting that is not caused by any illumination supplied by the photographer.
The available naturallight completely surrounding a subject. Light already existing in an indoor or outdoorsetting that is not caused by any illumination supplied by the photographer i.e.not by artificial light source.