Video camera with parameter service elements - has focusing, distance, zoom etc., elements in form of track ball

摘要

The video camera has a track ball (4) which adjusts a marking position within a taken image while automatically carrying out zoom adjustment on to the object defined by the marking. The determined focusing value is stored until the marking within the image is again shifted, or a taking-over key has been depressed. The track ball may adjust a marking on to selected keys of a keyboard representing letters or numbers on a display. The subsequently selected symbols can be presented or stored for the formation of a test line. The track ball may select an image from several stored over, according to a titling function, which can be gated into the image taken by the camera. ADVANTAGE - Simple camera handling. Focusing window set easily and quickly to desired position.