Some of pixels in a general image sensor for image capturing are designated as vision pixels used for vision recognition. Optical information obtained only from the vision pixels is used to perform vision recognition in the vision recognition mode. Capturing image data is generated based on optical information obtained from all the pixels in the image data in the image-shooting mode. A digital signal converter that converts optical information obtained only from vision pixels into a digital signal is separately provided in addition to a digital signal converter that converts optical information of all pixels in the image sensor into a digital signal.