WHITE BALANCE CONTROL AMOUNT CALCULATING DEVICE

A white balance control amount calculating device, provided in an electronic still camera, comprises an imaging device by which an image signal of a subject is sensed. Based on the image signal, a single image is divided into three image areas, for example. The first image area contains a first subject which is located at a short distance from the electronic still camera. The second image area contains a second subject which is located at infinity. The third image area contains a third subject which is located at a distance between the first and second subjects. An image area, in which a subject image is in-focus, is extracted from the three image areas. A control amount for a white balance adjustment is obtained based on image data corresponding to the extracted image area.