An imaging apparatus includes image capturing circuitry configured to capture an image including a reference pupil showing an entire shape of a pupil of an eye of a user and an image including a partial pupil showing a portion of the pupil, and a controller configured to determine a difference value between a first center that is determined based on the entire shape of the reference pupil and a second center that is determined based on a partial shape of the reference pupil, to determine an error correction value for correcting an error related to a center of the partial pupil based on the difference value, and to determine the center of the partial pupil by using the error correction value.