To enable a relationship between illumination setting (illumination condition) in a plurality of illuminating devices and a photography parameter to be easily adjusted.

An information processing unit 100 preserves presence/absence and light quantity of light emission as illumination setting values according to a theme of photography for each of illuminating devices 102-1 to 102-n, as well as preserves a photography parameter according to the theme of photography as a camera setting value for each of cameras 103-1 103-m, and moreover preserves such an illumination setting value as to make exposure appropriate among the illumination setting values in association with each of the camera setting values as a reference illumination setting value. The information processing unit selects the reference illumination setting value corresponding to such a camera setting value as to minimize subject luminance among the camera setting values as a selection illumination setting value, and performs a camera exposure adjustment on the basis of the difference between the subject luminance at the camera setting value making exposure appropriate to the selection illumination setting value and the subject luminance at the camera setting value.