| A | B |
|---|
| additive primary colors | red, green, and blue. |
| attached shadow | Shadow that is on the object itself. |
| background light | Illumination on the set pieces in the backdrop. |
| back light | illumination from behind the subject and opposite the camera; usually a spotlight |
| cast shadow | Shadow that is produced by an object and thrown onto another surface |
| color temperature | Relative reddishness and bluishness of white light |
| contrast | The difference between the brightest in the darkest spots in a video image |
| diffused light | Light that illuminates a relatively large area and creates soft shadows |
| directional light | Light that illuminates a relatively small area and creates harsh, clearly defined shadows. |
| falloff | the speed in which a light picture portion turns into shadow areas |
| fast falloff | The light area turns abruptly into shadow areas and there is a great difference in brightness between light and shadow areas |
| slow falloff | a very gradual change from light to dark and a minimal brightness difference between light and shadow areas |
| fill light | Additional light on the opposite side of the camera from the key light to illuminate shadow areas and thereby reduce falloff |
| floodlight | Alighting instrument that produces to fuse light |
| foot-candle (fc) | The unit of measurement of illumination, or the amount of light that falls on an object |
| high-key lighting | Light background and ample light on the scene. Has nothing to do with the vertical positioning of the key light |
| indicent light | Light that strikes the object directly from its source. |
| Key light | Principal source of illumination; usually a spotlight |
| light plot | A plan, similar to a floor plan, that shows the type, size (wattage), and location of the lighting issues relative to the scene to be illuminated in the general direction of the light beams |
| low-key lighting | Fast falloff lighting with dark background and selectively illuminated areas. Has nothing to do with the vertical positioning of the key light |
| lux | European standard for measuring light intensity |
| photographic principle | The triangular arrangement of key, back, and fill lights. Also called triangle, or three point, lighting |
| reflected light | Light that is bounced off the illuminated object. To measure reflected light, point the light meter close to the object from the direction of the camera |
| RGB | Stands for red, green, and blue -- the basic colors of television |
| spotlight | Alighting instrument that produces directional, relatively un-diffused light. |
| triangle lighting | The triangular arrangement of key, back, and fill lights. Also called three point lighting |
| White balance | The adjustments of the color circuits in the camera to produce white color and lighting of various color temperatures (relative reddishness or bluishness of white light). |
