Provided is a technology for acquiring a tomographic image under an appropriate focusing condition by an OCT apparatus. A control apparatus configured to control a tomographic image acquiring unit configured to acquire a tomographic image includes: a setting unit configured to set a focusing area on an object to be inspected a condition acquiring unit configured to acquire a first focusing condition for a front image acquiring unit with respect to the focusing area, which is set in a partial region of a front image of the object to be inspected acquired by the front image acquiring unit, and is narrower than an image acquiring area of the front image and a control unit configured to cause the tomographic image acquiring unit to acquire the tomographic image under a second focusing condition in accordance with the acquired first focusing condition.
