An imaging system includes an infrared camera 10 that is sensitive to light beams having wavelengths in an infrared region, a lighting unit 20 that emits light beams having multiple wavelengths in an infrared region in a region including the wavelengths to which the infrared camera is sensitive, and a control unit 30 that controls capture of an image by the infrared camera 10 and emission of a light beam by the lighting unit 20.