An image quality inspection camera system includes: N (integer of N≥2) light sources that emit light on a medium; a camera for photographing the medium; and a control section, in which the control section executes setting processing when an i-th light source (integer of i=1 to N) is lit with a reference driving signal, for setting an image quality inspection time driving signal of the i-th light source, and the setting processing includes calculating an i-th representative luminance value by performing a predetermined representative luminance value calculation processing based on a luminance value of each pixel photographed by the camera when the i-th light source is lit with the reference driving signal, and determining the image quality inspection time driving signal of the i-th light source by adjusting the reference driving signal such that the i-th representative luminance value satisfies a predetermined target luminance value condition.