A digital microscope apparatus includes an illumination optical system configured to emit illumination light; a stage having an opening capable of transmitting the light therethrough, on which a preparation can be placed in accordance with a position of the opening; an enlarging imaging unit including an objective lens configured to enlarge an image and disposed to face the system with the stage disposed therebetween, and an imaging device configured to capture an image enlarged by the lens; a white image acquiring unit configured to open the opening, to cause the system to emit the light in a state where an image point of the system is aligned with a focal point of the lens, and to acquire, as a white image, an image formed on an imaging surface of the device; and a calculation unit configured to use the captured white image to calculate a shading correction coefficient.