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L
LOAD-OUT
The process by which all of the elements of a production are struck from the
theater and loaded onto a truck for touring.
LOCAL CREW
The technicians who work at a particular venue, but do not tour with a
production. A local crew may be hired in by the venue just for a particular
production or may be permanent staff. Local is also used to describe a local
branch of a union such as I.A.T.S.E. which provides crews to theatrical
venues.
LOOK
A lighting design term used to refer to a specific stage image created by
lighting. Also called a "state" by designers in the UK. A show may be
described as having a certain look, or a particular scene or song may have a
look or series of looks which are returned to or repeated.
LUMEN
A unit used to measure the brightness of a light source. The more lumens
produced per watt of power supplied, the more efficient a light source is.
LUMINAIR
A lighting instrument. A common term in the UK, luminair is finding more
common usage in the United States.
LUMINANCE
The measured amount of light reflected by a surface.
LIGHT CURTAIN
A lighting effect which, when an area is diffused with smoke, produces a
wall of light. Produced (usually) by a batten of low voltage PAR lamps wired
in series.
Automated versions are available which have color changers built-in and are
able to tilt up and down. The original Light Curtain designed by Josef
Svoboda is still made by ADB.
LIGHT JOCKEY or LJ
Danish slang for lighting designer.
LIGHTING PLAN
A scale drawing detailing the exact location of each lantern used in a
production and any other pertinent information (E.g. its dimmer number,
focus position and color number). Often drawn from the theaters' groundplan.
LIGHTING PLOT
The process of recording information about each lighting state either onto
paper or into the memory of a computerized lighting board for subsequent
playback. (in USA, this term is used for a lighting plan and a lights
session is when lighting states are set up.)
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