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 [..]

The natural light in a scene. Read articles that include this term

Light existing in the environment that is not produced by the imaging system. Ambient light can be natural or artificial light. Ambient light is generally uncontrolled and can be highly variable, posi [..]

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.

the natural light (usually soft) or surrounding light around a subject in a scene; also see background lighting  

In digital photography terms, ambient light refers to the natural light in a scene that you are shooting. See also "The Digital Camera Picture" in Webopedia's Quick Reference [..]

the organically accessible light that lights up or encompasses an item or other component part inside a climate or surrounding or tangible framework.

The level of illumination in an enclosed space, from both natural and artificial sources, an important consideration in the preservation of materials that deteriorate when exposed to light, especially [..]

General, nondirectional, room light. (Lighting)

The sum of all non-directional light in a given area emitted by all sources at a given time. A high level of ambient light can have an impact on a sign's readability, and can be a consideration i [..]

The general overall level of lighting in an area.

Available light - this can be any kind of light that's already there, such as daylight or artificial light - as opposed to light the photographer adds with a flash gun or other photographic light [..]

The light that exists in a specific situation without augmentation with flash or studio lights. Also known as 'available light'.

Ambient light is the unadulterated and unassisted light in any environment. It may be the sunlight, it maybe the lamps in your apartment, plus the sunlight, it might be the light from neon signs, street lights and moonlight at night.

The natural light in a scene. Read articles that include this term

Ambient light, or "available light", is the natural light present in an area, and can basically be defined as any light that doesn't come from the flash. If you're outside during the day, the sun is probably providing the bulk of your ambient light. Flash can be used instead of ambient light, or alongside it to complement the av [..]

the available light surrounding a subject. Light already existing in an indoor or outdoor setting that is not caused by any illumination supplied by the photographer.

Often referred to as existing light, ambient light is the natural light that is present on a shoot.

The existing light in a scene provided by nature, not artificially by the photographer.

  Directionless light that exists in an environment but does not seem to come from a particular source in the environment. An approximation for light that has been reflected so many times that its ori [..]