Lens control means 221 controls an optical lens to change an optical zoom scaling factor. A photoelectric conversion element 31 subjects an image formed by the optical lens to photoelectric conversion. Electronic zoom means 222 changes an electronic zoom scaling factor for a picked-up image from the photoelectric conversion element. Instruction means 5 provides an instruction for enlargement/reduction of an image. Operation selection instruction means 6 provides, when an instruction is provided by the instruction means, an instruction for selecting any of a first setting in which an optical zoom operates, a second setting in which an electronic zoom operates, and a third setting in which the optical zoom and the electronic zoom operate in a coordinated manner. Parameter setting means 224 sets a parameter for the lens control means and a parameter for the electronic zoom means in accordance with the instruction means and the operation selection instruction means. Zoom control means 225 outputs a control signal to the lens control means and the electronic zoom means based on the parameters.
