Motion picture camera
AssigneesKarl Vockenhuber, Raimund Hauser
InventorsOtto Freudenschuss, Gerd Kittag
Life of this patent
Estimating the term…
Abstract
A motion picture camera having a film transport mechanism driven by an electric motor having an electronic speed control circuit which may be controlled by the camera operator so as to modify the speed of the motor and consequently the film transport velocity for the selection of various picture frequencies or frames per unit of time both above and below a normal picture frequency for normal shooting thereby permitting both time lapse and slow motion photography during use, the motor speed control circuit permitting the motor to be returned to its normal film speed automatically, together with an automatic aperture control circuit and a picture frequency indicator which may be observed by the operator during the operation of the camera.
Claims17
A motion picture camera comprising, in combination, a film transport mechanism, an electric motor for driving said film transport mechanism, an automatic aperture control circuit, an electronic speed control circuit for said motor, a first actuatable adjusting element which during actuation conditions said electrical speed control to increase continuously the speed of said motor to a first selected speed level, a second actuatable adjusting element which during actuation conditions said electrical speed control to decrease continuously the speed of said motor to a second selected speed level, means in said speed control circuit for resetting said motor speed to said normal film transport speed when the operation of said camera is terminated, and a picture frequency indicator for displaying the selected picture frequency accessible to the camera operator at least during the operation of the camera.
Dependencies are inferred from the claim text.