(see also: Focus Puller or 1st AC); The scope of responsibility of the Camera Assistant includes the manual, technical and to a limited extent, organizational collaboration in the production of a film, television and or video. This requires fundamental theoretical and practical knowledge in the field of photography, lenses and filters, film, camera technique: handling, functionality, applicability and compatibility of all conventional camera systems, their accessories and parts, film lighting: characteristics and application, as well as film lab equipment and film processing, and the film production process in general.