An object shooting condition judging device for an image shooting apparatus of the present invention includes: an ultraviolet light detecting element for detecting received ultraviolet light; comparing means for comparing ultraviolet light intensity detected by the ultraviolet light detecting element with predetermined intensity that has been determined in advance; and judging means for judging shooting conditions of an object based on the comparison result of the comparing means. This object shooting condition judging device enables quick response and is capable of adjusting white balance of images between indoors and outdoors in a simple and easy manner.