An endoscope system 100 according to the present invention includes a white light source 61, a special light source 62 that emits the special light that has a wavelength band different from the white illumination light, a CMOS image pickup element 80, a read address setting unit 53 that can arbitrarily set a pixel as a read target and a read order in the CMOS image pickup element 80, a control unit 55 that controls an irradiation process in each light source and changes a pixel as a read target and a read order set by the read address setting unit 53 according to a type of a light source that emits light, a timing generator 34 and an AFE unit 36 that read pixel information by causing pixel information to be output from a pixel set as a read target in the CMOS image pickup element 80, and an image processing unit 42 that generates an image from read pixel information.