Patent ID: 7899316

Claim:
A lens controller which electrically controls a focus and a zoom of a taking lens, the lens controller comprising: an AF control device which automatically controls the focus of the taking lens so that a given subject imaged by the taking lens is in focus; and a view angle correction device which keeps an angle of view of the taking lens constant by moving the zoom of the taking lens to prevent a variation of the angle of view associated with a movement of the focus moved by the AF control device, wherein when the focus is moved by the AF control device, the view angle correction device detects a current absolute position of the focus by a position detecting device, obtains a position of the zoom for preventing the variation of the angle of view associated with the movement of the focus moved by the AF control device based on the detected current absolute position of the focus and according to previously stored view angle correction data, and moves the zoom to the obtained position, and the view angle correction device obtains the position of the zoom for preventing the variation of the angle of view by interpolating a relationship between focus positions and corresponding zoom positions for which the variation of the angle of view is prevented, based on the view angle correction data.