Patent ID: 6853438

Claim:
A test apparatus to check the exposure quality of an exposed film, in particular of a motion film, comprising: a test pattern holder ( 13 ) for holding a test pattern ( 15 ) of the exposed film; a reference pattern ( 17 ) which has at least one reference mark ( 33 , 35 , 37 , 39 ) and is provided in superimposition with respect to the test pattern ( 15 ) held by the test pattern holder; a light transmitter ( 11 ) for the illumination of the test pattern ( 15 ) held by the test pattern holder and of the reference pattern ( 17 ) superimposed herewith; a light receiver ( 19 ) for the reception of the light transmitted through the reference pattern and through the test pattern and for the generation of corresponding electrical received signals; and an evaluation device ( 22 ) for the evaluation of the received signals of the light receiver ( 19 ) with respect to at least one quality parameter.