ZOOM LENS, ZOOM LENS SYSTEM, CAMERA SYSTEM AND ZOOM CONTROLLER

摘要

PROBLEM TO BE SOLVED: To maintain a viewing angle in the case of using a tracking function and a zoom preset function to be constant regardless of focus driving. SOLUTION: This zoom lens 101 is provided with a control means 5 arithmetically operating zoom command information and focus command information for driving and controlling a zoom part Z and a focus part F in accordance with the input of zoom control information and focus control information. Command viewing angle information is obtained by comparing an allowable viewing angle showing at least either the maximum value or the minimum value of the viewing angle which is allowed to be changed with a target viewing angle showing the change target value of the viewing angle obtained from the zoom control information, and the zoom command information for obtaining a command viewing angle is obtained based on the command viewing angle and the focus command information obtained from the focus control information.