IMAGING APPARATUS, IMAGING SYSTEM, VEHICLE AND FOREIGN MATTER DETERMINATION METHOD

The imaging apparatus includes the lens the image sensor and the controller A light receiving surface of the image sensor is disposed on a focused position of an object by the lens the object being located at a specific object distance. The controller generates one or more second images from a first image obtained from the image sensor the focus position of the second images being changed to an object distance different from a specific object distance, and determines the presence of foreign matters adhered to the surface on the object side of the lens, on the basis of the focused state of the second image.