1. An imaging apparatus comprising a level correction unit configured to correct a signal level of a captured image in a non-Bayer pattern when a Bayering process is performed on the captured image, to make an earlier level equal to a later level, the earlier level being a signal level of a pixel with the highest sensitivity in the captured image prior to the Bayering process, the later level being a signal level of a pixel to be used in exposure control on an image in a Bayer pattern, the image in the Bayer pattern being the captured image after the Bayering process.