Focus
noun
Subject Field: Optics

The degree to which light rays coming from the same part of an object through different parts of the lens reconverge at the same point on the film frame, creating sharp outlines and distinct textures. Bordwell & Thompson			See Also Focal length Out-of-focus In focus Bibliography Index Home Conceptual tree
Context: You can adjust the aperture, focus, and lighting, and see immediately what result is being received by the videotape. I constancy use my videotape setup to check special effects before putting them on film. Brodbeck, 1968 Attestation: 2 Fuoco Reliability: 3