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; an image compression unit configured to perform compressing and coding on the image information developed by the first development unit and generate an image file; a RAW compression unit configured to perform compressing and coding on the information representing the RAW image and generate a RAW file; a storage unit configured to store the image file and the RAW file in a storage medium; and a second development unit configured to read the RAW file stored in the storage medium and develop the RAW image to obtain an image having higher image quality than that obtained by the first development unit; and a reproducing unit configured to reproduce an image stored in the storage medium, wherein the storage unit records information for identifying the RAW file corresponding to the image file as metadata of the image file and records information for identifying the image file corresponding to the RAW file as metadata of the RAW file wherein, when the second development unit completes developing of the RAW file, the image compression unit performs compressing and coding on the image information developed by the second development unit and generates an image file including a developed image of high quality wherein, when reproduction of a certain image is instructed, if there is the image file including the developed image of high quality in the storage medium, the reproducing unit reproduces the image file including the developed image of high quality and if there is not image file including the developed image of high quality in the storage medium, the reproducing unit reproduces the image file including the image information developed by the first development unit.