To provide a shutter improved so that a foreign matter on the light receiving surface of an imaging apparatus nearest to a subject light side is easily removed.

The shutter device 30 is equipped with a shutter curtain 31 comprising a plurality of light shielding blades 32 to 34 opening/shutting the imaging surface A of the imaging apparatus. The light shielding blade 32 whose moving distance is the longest of the light shielding blades 32 to 34 is provided with a belt-like member 32a so as to generate an air current F1 on the forefront light receiving surface B of the imaging apparatus when the shutter curtain 31 travels in a direction Y.