A photoacoustic apparatus disclosed in the description includes a light source； transducers that detect acoustic waves and output electric signals, the acoustic waves being generated when an object is irradiated with light generated from the light source； a support member that supports the transducers such that directional axes of the transducers gather； a moving unit that moves the support member relative to the object within a movement region； a storage unit that stores the electric signals output from the transducers at timings； and a computing unit that acquires object information for each reconstruction position on the basis of the electric signals stored in the storage unit. The light source generates the light at the timings. The moving unit moves the support member such that there exists a region in which a density of a distribution of positions of the support member at the timings is constant.
