An imaging unit includes a plurality of photoelectric conversion elements, a processing unit, and a display unit. The processing unit processes a signal transmitted from the imaging unit. The display unit displays an image based on the signal transmitted from the processing unit. The imaging unit acquires first image information at a first time. The processing unit generates first prediction image information at a second time later than the first time based on the first image information. Moreover, the display unit displays an image based on the first prediction image information.