Ultra-Sonic Cleaner - A sophisticated cleaning machine found at labs to clean negatives prior to printing or transfer to video. It uses sound waves to shake loose dust.

Ultra-Sonic Splicer - An expensive and sophisticated splicing machine.


Undercrank - To run the camera slower, producing fast motion. The term has survived from the time when you would crank a camera.


Underexposure - Filming a scene with less light than the emulsion of the film needs for a correct exposure. The image will be too dark. If compensated for in printing, the image will appear grainy, and very muddy.
Upright Moviola or Upright - An editing machine with arms in back to hold the take up and supply reels. The film moves up and around to a screen on the front. Foot petals control motors for sound speed and variable speed viewing.