1. A digital camera system comprising: an image capturing apparatus for capturing an image; and an image processing apparatus for performing an imaging process on an image captured by the image capturing apparatus, wherein said image capturing apparatus has an optical system including a lens and an image sensor for converting subject light incident via said optical system into an electric signal, said image capturing apparatus captures a single blurred image in which a blurring is caused intentionally by changing a relative positional relation between said lens and said image sensor and also captures a single normal image in which a blurring is not caused intentionally separately from said single blurred image, wherein the blurred image is entirely blurred, and said image processing apparatus combines said single normal image and said single blurred image after said image capturing apparatus separately captures said single normal image and said single blurred image, thereby generating a single composite image separate from said single normal image and said single blurred image having a no-blurring area in which a blurring is not intentionally caused and a blurred area in which a blurring is intentionally caused, the single composite image being generated based on a first composition ratio of the normal image and a second composition ratio of the blurred image, and the single composite image including a portion where each of the first composition ratio and the second composition ratio are nonzero.