Information processing apparatus, imaging apparatus, method, and storage medium

An information processing apparatus comprising:

• at least one processor,
• a memory coupled to the at least one processor, the memory storing instructions that, when executed by the processor, cause the processor to functions as:
• an acquisition unit configured to acquire a captured image;
• a first detection unit configured to detect a subject from the image acquired by the acquisition unit;
• a second detection unit configured to detect a part of the subject from the image acquired by the acquisition unit;
• and
• a determination unit configured to determine exposure based on a luminance of the subject detected by the first detection unit to decrease a difference between the luminance of the subject and a first luminance which is a target luminance of the subject, and subsequently determine exposure based on a luminance of the part of the subject detected by the second detection unit to decrease a difference between the luminance of the part of the subject and a second luminance which is a target luminance of the part of the subject, the second luminance being different from the first luminance.