The invention relates to an application method of a long-focus shooting ptz camera
system free of repeated zooming viewfinding The application method is characterized in that on the basis of a conventional ptz camera, a wide-angle fixed-focus camera is installed right above the main camera, and the function of the long-focus shooting ptz camera
system is achieved through the following steps: S1, protocol development of the main camera and the wide-angle fixed-focus camera is completed; S2, a
processing system of the main camera is operated to carry out
processing on two paths of video signals;S3, a zooming frame is added to the wide-angle picture by operating the
processing system of the main camera, and a dual-camera system with calibration finished becomes a module; and S4, viewfindingand shooting are carried out. According to the method in the invention, when zooming is carried out in the shooting process, if a long-focus lens target object shot by the long-focus camera is lost, the long-focus state does not need to be exited, only the zooming frame needs to be moved to the target object, and the target object can appear in the picture of the long-focus lens; after the currenttarget shooting is finished, only the zooming frame on the wide-angle picture needs to be moved to a next target, so that repeated zooming-free viewfinding is achieved, and the shooting efficiency and the shooting effect are improved.