PROBLEM TO BE SOLVED: To provide an apparatus for eliminating unnecessary adjustment, reducing loads on an operator, and reducing the period of time required before imaging, when an image-capturing site and an image-capturing mode are changed.SOLUTION: In a control apparatus 2 connected to an imaging apparatus, a selection unit 3011 selects an image-capturing site of a subject according to input by a user. When the image-capturing site is changed according to input by the user, a determination unit 3012 determines whether or not to adjust at least one of a relative position and a relative position and a determination unit and the coherence gate position of a target object based on a second image-capturing site. The determination is made based on image-capturing conditions for the image-capturing sites before and after the exchange.
