Calibration apparatus and method for controlling the same

The present invention is a calibration apparatus comprising a calibration unit configured to perform calibration for an image display apparatus; an acquiring unit configured to acquire a color deviation direction that represents a direction of deviation in a color space between a color measurement value and a theoretical value, for each of color patches of a plurality of colors after executing the calibration; and a control unit configured to determine degrees of similarity of the color deviation directions in relation to the color patches of at least some of the plurality of colors included in the plurality of colors and control whether or not the calibration unit is allowed to perform the calibration for the image display apparatus again, on the basis of a result of the determination.