An endoscope system is an endoscope system including a first endoscope and a second endoscope, the first endoscope including a first frequency correction section, and the second endoscope not including the first frequency correction section, and a video processor, wherein the video processor includes a frequency correction information storage section which stores third frequency correction information based on the endoscope information of the second endoscope, a correction amount acquiring section which acquires second frequency correction information for performing frequency correction in concert with frequency correction processing by the first frequency correction section when the first endoscope is connected and acquires the third frequency correction information from the frequency correction information storage section when the second endoscope is connected, and a second frequency correction section which performs frequency correction on the video signal from the endoscopes on the basis of the correction information acquired by the correction amount acquiring section.
