https://joy.videvo.net/videvo_files/video/free/2014-12/large_watermarked/TV_Studio_Camera_Focus_Rig_preview.mp4 TV Studio Camera Focus Rig A shot of the focus knob for the servo lens being used on a professional TV Studio camera. 1080padjustmentsbroadcastingcameraequipmentfocusin-actionknobmediaprofessionalringstudiotvusevideo