The present invention employs an object information acquiring apparatus that receives an acoustic wave generated from an object, on which light is irradiated, and generates property information. The apparatus includes a housing including an aperture into which, when the acoustic wave is received, the object, which is a part of an examinee, is inserted and, when performance evaluation for the apparatus is performed, a calibration device corresponding to a type of the performance evaluation is inserted, the housing being capable of holding the examinee a holding unit configured to hold the object a positioning unit configured to specify an attachment position of the calibration device correspondingly to a position specifying member of the calibration device and a detecting unit configured to detect the type of the performance evaluation performed using the inserted calibration device.
