Glossary
ASA (1) American Standards Association (now the ANSI). (2) Method of rating the speed of film. Replaced by International Standard Organisation (ISO) or Exposure Index (El).
Best boy The assistant chief electrician, the gaffer’s chief assistant.
Black wrap Black anodised aluminium foil. Used to control spill light or shaping a light beam.
Brightness Term often incorrectly used to mean luminaire. Brightness is a subjective effect, it is how bright we see an object.
Butterfly Large frame to hold nets, silks or blacks (6 ft × 6 ft, 12 ft × 12 ft, 20 ft × 20 ft).
Chroma Another name for saturation, control usually found on monitors.
Chroma key An electronic process for inserting an artiste (foreground) into a background picture; ...
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