lighting.
Ambient Light | The light already present in a scene, before any additional lighting is added. More info: Ambient Light |
Incident Light | Light seen directly from a light source (lamp, sun, etc). |
Reflected Light | Light seen after having bounced off a surface. |
Colour Temperature | A standard of measuring the characteristics of light, measured in kelvins. More Info: Colour Temperature Chart |
Contrast Ratio | The difference in brightness between the brightest white and the darkest black within an image. More Info: Contrast Ratio |
Key Light | The main light on the subject, providing most of the illumination and contrast.More Info: 3 Point Lighting The image below shows this:  Below shows Key light with less glare (created when the camera is too close to a light) :  |
Fill Light | A light placed to the side of the subject to fill out shadows and balance the key light. More Info: 3 Point Lighting |
Back Light | A light placed at the rear of a subject to light from behind. More Info: 3 Point Lighting The image below shows both key light and back light used. Notice the 'halo' effect above the sholder:  |
Hard Light | Light directly from a source such as the sun, traveling undisturbed onto the subject being lit. |
Soft Light | Light which appears to "wrap around" the subject to some degree. Produces less shadows or softer shadows. |
Spot | A controlled, narrowly-focused beam of light. |
Flood | A broad beam of light, less directional and intense than a spot. |
Tungsten | Light from an ordinary light bulb containing a thin coiled tungsten wire that becomes incandescent (emits light) when an electric current is passed along it. Tungsten colour temperature is around 2800K to 3400K. Also known as incandescent light. |
Halogen | Type of lamp in which a tungsten filament is sealed in a clear capsule filled with a halogen gas. |
Fresnel | A light which has a lens with raised circular ridges on its outer surface. The fresnel lens is used to focus the light beam. |
Incandescent | Incandescent lamps produce heat by heating a wire filament until it glows. The glow is caused by the filament's resistance to the current and is called incandescence |
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