An object information acquiring apparatus employed in the present invention includes: a plurality of transducers that generate an electric signal upon reception of an acoustic wave from a measurement subject； a supporter that supports the plurality of transducers such that directional axes of at least a part of the plurality of transducers are gathered together； a point sound source； means for controlling relative positions of the measurement subject and the supporter； a processor that determines respective distances from the plurality of transducers to a focus position of the measurement subject and generates property information relating to the focus position； and a corrector that determines correction data.
