1. An imaging apparatus, comprising: an imaging unit configured to capture an object image and generate information representing a RAW image; a first development unit configured to acquire the information representing the RAW image and develop the RAW image during the image capturing operation; a storage unit configured to store the information representing the RAW image in a memory; a second development unit configured to read the information representing the RAW image stored in the memory and develop the RAW image to obtain an image having higher image quality than that obtained by the first development unit; a display processing unit configured to output a display image relating to the image information developed by the first or second development unit; and a control unit configured to perform a control operation such that the image information developed by the first development unit is supplied to the display processing unit during the image capturing operation performed by the imaging unit and immediately after the image capturing operation and such that, when the second development unit completes developing of the image information, the image information developed by the first development unit is replaced with the image information developed by the second development unit and the image information developed by the second development unit is supplied to the display processing unit.