An endoscope system is provided with an operation part, an elongated part, an imaging part, a control part, a display part, a rotation operation input part, and a rotation coupling part that rotates an imaging field of view in the imaging part around the optical axis in accordance with the rotation amount provided to the control part, wherein the control part outputs to the display part an image which has been captured by the imaging part and is brought into a state in which the field of view is rotated by the rotation coupling part.