1. An image recording output system for recording an image and outputting the same, comprising: a focus control section for sequentially focusing at a plurality of different focus distances within one image-capturing range; an image capturing section for capturing a first captured image within the image-capturing range when the focus control section focuses at a first focus distance, and for capturing a second captured image within the image capturing range when the focus control section focuses at a second focus distance; an image output section for superimposing the first captured image and the second captured image to output a superimposed image, wherein the image output section sequentially displays the first captured image and the second captured image to display the superimposed image; and a light refractive index variable section for refracting light from within the image-capturing range, the light refractive index variable section being formed of an electro-optic crystal that exhibits the Pockels effect or the Kerr effect.