A type acquisition unit determines the type of an endoscope connected to an endoscope connection unit. A light source control unit performs control to make the light emission balance of light in the respective wavelength ranges, which is obtained in a case where the type of the endoscope corresponds to a first endoscope, and the light emission balance of light in the respective wavelength ranges, which is obtained in a case where the type of the endoscope corresponds to a second endoscope, be different from each other.
