A method for controlling a made of a film receiving rays gear of a motion picture camera, branched-off imaging ray path

摘要

In a method for controlling a made of a film receiving rays gear (s1) of a motion picture camera (1) branched-off imaging ray path (s2) which, as a function of the picture recording frequency of the motion picture camera (1) is periodically interrupted, for the infinitely variable adjustment of the viewfinder image contrast and in order to avoid the penetration of scattered light on the motion picture film (10) in which the viewfinder ocular (8) of the imaging beam path (s2) during the exposure break of the motion picture film (10) by means of an optical switching element (6) with a constant or variable frequency is interrupted or from a first image plane to at least one second image plane or in a light trap preferably deflected with a variable duty cycle. The optical switching element (6) consists of at least one in the imaging beam path (s2) of the motion picture camera (1) arranged dmd (digital micromirror device) - chip (6) arranged in the form of a grid with a plurality of micromirrors, which are pivotable in an electronically controlled.