1. An image capturing system comprising: an image-capturing instruction unit, which provides an instruction to perform image capturing in response to an operation by a user; an image input unit which inputs image data; a color-space setting unit which sets information of plural different types of color spaces; and a storage unit which receives the image data input by the image input unit in response to one image-capturing instruction from the image-capturing instruction unit, and which automatically stores the input image data in a form associated with the information of the plural different types of color spaces set by the color-space setting unit.