PROBLEM TO BE SOLVED: To make tones of an endoscopic image displayed on a display part of a device other than the endoscope apparatus substantially equal to an endoscopic image displayed on a display part of the endoscope apparatus, when image signals of the endoscopic image are transmitted wirelessly to the device and then are displayed at the display part of the device.SOLUTION: An endoscope system 1 includes an endoscope apparatus 2 and a PC 3. The PC 3 includes a radio circuit 20 and a display part 19. The endoscope apparatus 2 includes an imaging device 11, and LCD 17, a CCU 14, and a radio circuit 18. Further, the PC 3 generates an image for color determination based on prescribed color information, displays it at the display part 19, and displays an endoscopic image from the endoscope apparatus 2, which is received through the radio circuit 20, at the display part 19. The endoscope apparatus 2 analyzes the image signal of the color determination image obtained by imaging the color determination image displayed at the display part 19 by the imaging device 11, and obtains the color information of the image signal of the color determination image. On the basis of the obtained color information of the color determination image, color correction processing to the endoscopic image is performed.
