Patent ID: 7057645

Claim:
A camera system comprising: an image pickup device for taking an image formed by light flux from an object; a luminance sensor for sensing luminance of the object; a detector for judging whether a proper exposure time of the image pickup device which is calculated by the luminance of the object is longer than a predetermined time period; and a controller for controlling the image pickup device for taking a plurality of images of the same field of the object by a control exposure time T 2 equal to or shorter than the predetermined time period, when the calculated exposure time is longer than the predetermined time period, wherein the control exposure time T 2 and the number of image taking operations C are shown by the following equations; C =INT( T 1 /T 0) and T 2 =T 1 /C where the symbol T 1 designates the proper exposure time, the symbol T 0 designates a limit exposure time causing a camera shake, and the symbol INT signifies raising fractions to form an integer.