An object information acquiring apparatus is used that include a probe a signal processor that generates a first image based on photoacoustic waves, which are generated from an object irradiated with light and which are received by the probe, and that generates a second image based on ultrasound waves, which are received by the probe and then transmitted to the object and reflected off the object a controller that displays the first image and the second image on a display unit a first corrector that corrects brightness of the first image and a second corrector that corrects brightness of the second image independently from the first corrector.
