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Chapter 8

QuestionAnswer
additive primary colors Red, green, and blue. Ordinary white light (sunlight) can be separated into the three primary light colors. When these three colored lights are combined in various proportions, all other colors can be reproduced.
attached shadow Shadow that is on the object itself. It cannot be seen independent of (detached from) the object.
background light Illumination of the set pieces and the back- drop. Also called set light.
back light Illumination from behind the subject and opposite the camera; usually a spotlight.
baselight Even, nondirectional (diffused) light necessary for the camera to operate optimally. Refers to the overall light intensity.
cast shadow Shadow that is produced by an object and thrown (cast) onto another surface. It can be seen independent of the object.
color temperature Relative reddishness or bluishness of white light, as measured on the Kelvin (K) scale. The norm for indoor video lighting is 3,200K; for outdoors, 5,600K.
contrast The difference between the brightest and 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 (degree) with which a light picture portion turns into 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; usually done with floodlights.
floodlight A lighting instrument that produces diffused light
foot-candle (fc) The unit of measurement of illumination, or the amount of light that falls on an object. One foot-candle is 1 candlepower of light (1 lumen) that falls on a 1-square- foot area located 1 foot away from the light source.
high-key lighting Light background and ample light on the scene. Has nothing to do with the vertical positioning of the key light.
incident light Light that strikes the object directly from its source. To measure incident light, point the light meter at the camera lens or into the lighting instruments.
key light Principal source of illumination; usually a spotlight.
LED lights LED stands for light-emitting diodes. The small lamp is a solid-state device that changes electric energy into light energy. It burns with a high-intensity beam yet con- sumes less power than other lamps.
light plot A plan, similar to a floor plan, that shows the type, size (wattage), and location of the lighting instruments relative to the scene to be illuminated and 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 unit for measuring light intensity. Most lighting people figure roughly 10 lux = 1 foot-candle.
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 A lighting instrument that produces directional, relatively undiffused light.
triangle lighting The triangular arrangement of key, back, and fill lights. Also called three-point lighting and photographic principle.
white-balance To adjust the color circuits in the camera to pro- duce white color in lighting of various color temperatures (relative reddishness or bluishness of white light).
Created by: TaylortheSmol
 

 



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