noun
- Plural of bipack; a film or photographic material consisting of two layers of emulsion, typically used for color photography or special effects.
Usage: technical; photography
Examples
- Early color cinematography relied on bipacks to capture red and green color information on separate film layers.
- The photographer loaded bipacks into the camera to achieve the desired color separation effect.
- Bipacks were commonly used in motion picture production before modern color film stocks became standard.