A subject information obtaining apparatus includes a plurality of conversion elements (002) configured to receive an elastic wave that has propagated from a subject (000) and convert the elastic wave into a plurality of electrical signals, frequency-domain interferometry adaptive processing means (007) configured to execute a frequency-domain interferometry method and adaptive signal processing using the plurality of electrical signals and obtain power intensity distribution by calculating power intensity at each position on a plurality of scan lines, and correction means (009) configured to execute a correction process by which variation in power intensity between adjacent scan lines in a direction that intersects with the scan lines is reduced.
