Specifying and Measuring the Brightness of Motion Picture Screens

F. J. Kolb

Screen brightness is measured and specified in order to control viewing conditions for projected pictures. By the modulation of light from the projector the whole artistic creation captured in the production of a motion picture is presented to its ultimate audience. This creation can only equal the director's concept when viewing conditions are known and predictable. The control of screen brightness and the screen-image transfer characteristic is therefore a necessary condition for the most effective presentation of motion pictures. Brightness characteristics of projected pictures are discussed and the various practical simplifications considered. Nine conditions of screen-brightness measurement are described, specifications for the meters required are developed, and several simplified practical procedures for field measurement are detailed.

Print ISSN
Published
1953-10
Content type
Original Research
DOI
10.5594/J00986