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Cable
- To run,
hook up and/or interconnect electrical cables and the items
to which the cables are connected.
- A strong,
flexible wire rope made of steel, used to support pipes, battens,
truss, etc., from an overhead structure.
Cam-lok
A commonly used type of insulated, locking, single conductor cable
connector manufactured by Crouse-Hinds Inc. The name Cam-lok
is trademarked.
Capacitor
A component designed to have a specific amount of capacitance.
Casters (Castors)
Wheels placed on stands, trunnions, road cases, or anything that
requires easy mobility.
C-Clamp
In the film and video industries, a “C” shaped clamp
that attaches onto a pipe and locks with the aid of a bolt, that
when tightened, presses like a vice onto the pipe. It also has a
stud or studs for the attachment of luminaires, grip equipment,
etc.
Celo (Cello)
A term used to describe a translucent cucoloris.
Century Stand (C-Stand)
A grip stand manufactured by Matthews Studio Equipment Corp.
The name Century Stand is trademarked.
China Silk
A fabric used for linear diffusion material, i.e. it spreads the
light linearly.
Chroma
In the video industry, a measure of color intensity, i.e. it describes
the saturation of a hue.
Cine
Of or relating to the film and video industries.
Circuit Breaker
An electrical device designed to open and close a circuit by nonautomatic
means and to open the circuit automatically on a predetermined overcurrent
without damage to itself.
Color Balance
An arrangement of hue, chroma, and value within a design
that produces a sense of equilibrium, i.e., no colored area commands
attention to the detriment of the entire arrangement.
Color Correction
Adjusting the color temperatures of various luminaires so that they
are all the same, or to make them match existing light sources,
e.g., sunlight or fluorescent light. This is usually accomplished
by utilizing color media, but adjusting the input voltage levels
is a method sometimes used for some luminaires.
Color Frame
An apparatus used to hold color media or other types of filters.
It can be of various shapes and sizes and may comprise one or more
pieces.
Color Temperature
The temperature, in degrees Kelvin, of blackbody that generates
light with the closest visual color match to the source being specified,
i.e. a measure of the color appearance of light, not the actual
temperature of the light.
Color Wheel
An apparatus holding several different gels that can be rotated
by hand or motor such that any one gel can be placed in front of
a luminaire with relative ease.
Conductor
Generally, anything that will carry electrical current, but usually
refers to an insulated wire.
Connector
- Specifically,
the name for a family of electrical wiring devices, such as
plugs and receptacles, comprising one or more contacts, a means
for electrically attaching a conductor to each contact, a means
for electrically insulating each contact from the other, and
an overall insulating material around the complete assembly
- such that only the contacts are exposed when the connector
is properly installed to the item containing the conductors.
- Generally,
any item used to make an electrical connection between two or
more separate conductors.
Contrast
Ratio
Compare two reflected-light readings: 1) the lightest significant
area of the subject or scene, vs. 2) the darkest. Each medium or
method of reproduction has different brightness ratio limits. Projected
films about 125:1 (seven stops); Video about 32:1 (five stops).
Also see Lighting Ratio.
Convection Cooling
A cooling process whereby air circulation is maintained in order
to transfer heat from an object to the atmosphere around it by supplying
adequate ventilation and/or heat sinks, and without the use of electrical
or mechanical items such as fans, blowers, etc.
Convex
A term used to describe a lens side that is outwardly and usually
spherically curved.
Cookie (Cooky)
An abridged version of Cucoloris.
Cool Light
Light having a color temperature of approximately 3600°K to
4900°K, i.e. bright-white to blue-white.
Crank-Up Stand
A stand that is raised and lowered with the aid of a rotable handle
and gear mechanism.
Crown Glass
A type of glass that has excellent optical quality, used for lenses
and mirrors.
C-Stand
An abridged version of Century Stand.
Cucoloris
An opaque or translucent material having a cutout which will allow
light to pass through the cutout area in order to project a dappled
form, such as a cloud formation on the subject and background.
Cuke (Cukes)
An abridged version of Cucoloris.
Current
An abridged version of Electrical Current.
Cutter
A narrow, rectangular flag, ranging from 18" to 72" in
length, and 6" to 24" in width, generally used to block
only a portion of the beam.
Cyc
An abridged version of Cyclorama.
Cyc Light
An abridged version of Cyclorama Light.
Cyclorama (Cyc)
A vertical surface which is used to form the background for a theatrical
type setting, usually made of heavy cloth drawn tight to achieve
a smooth, flat surface. It usually represents the sky or suggests
limitless space. Traditionally, cycloramas were dome shaped or horizontally
curved, but may now also be flat or vertically curved, as well.
Cyclorama Light (Cyc Light)
A luminaire mounted at the top and/or bottom of a cyclorama in order
to light it in a smooth, uniform manner.
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