An imaging processing system comprising: an image pickup device including circuitry configured to create image data having a first gamut, the first gamut encompassing all the kinds of gamut which a decoder unit is capable of setting, from raw image data, the first gamut being automatically selected based on information on all the kinds of gamut which the decoder unit is capable of setting received from the decoder unit via a predetermined transmission path; and wherein when one kind of gamut which the decoder unit is capable of setting includes the other kinds of gamut which the decoder is capable of setting, the one kind of gamut is used as the first gamut; compression-code the image data including the first gamut to generate compression-coded image data; and an image processing device including circuitry configured to decode the compression-coded image data to generate uncompressed image data including the first gamut, and convert the uncompressed image data including the first gamut into image data including a second gamut, the second gamut being selected from a plurality of gamuts, the plurality of gamuts being all the kinds of gamut which the decoder unit is capable of setting, wherein the image pickup device transmits the compression-coded image data to the image processing device via the predetermined transmission path; wherein the image pickup device further transmits metadata including information regarding the first gamut to the image processing device via the predetermined transmission path; wherein the circuitry of the image processing device is further configured to convert the uncompressed image data including the first gamut into the image data including the second gamut using a conversion matrix and wherein the conversion matrix corresponds to a predetermined combination of the first gamut and the second gamut; wherein the circuitry of the image processing device is further configured to store a plurality of matrices, each corresponding to a different combination of the first gamut with the second gamut; and wherein the circuitry of the image processing device is further configured to select one of the plurality of matrices as the conversion matrix based on gamut metadata received from the image pickup device. an image pickup device including circuitry configured to create image data having a first gamut, the first gamut encompassing all the kinds of gamut which a decoder unit is capable of setting, from raw image data, the first gamut being automatically selected based on information on all the kinds of gamut which the decoder unit is capable of setting received from the decoder unit via a predetermined transmission path; and wherein when one kind of gamut which the decoder unit is capable of setting includes the other kinds of gamut which the decoder is capable of setting, the one kind of gamut is used as the first gamut; compression-code the image data including the first gamut to generate compression-coded image data; and an image processing device including circuitry configured to decode the compression-coded image data to generate uncompressed image data including the first gamut, and convert the uncompressed image data including the first gamut into image data including a second gamut, the second gamut being selected from a plurality of gamuts, the plurality of gamuts being all the kinds of gamut which the decoder unit is capable of setting, wherein the image pickup device transmits the compression-coded image data to the image processing device via the predetermined transmission path; wherein the image pickup device further transmits metadata including information regarding the first gamut to the image processing device via the predetermined transmission path; wherein the circuitry of the image processing device is further configured to convert the uncompressed image data including the first gamut into the image data including the second gamut using a conversion matrix and wherein the conversion matrix corresponds to a predetermined combination of the first gamut and the second gamut; wherein the circuitry of the image processing device is further configured to store a plurality of matrices, each corresponding to a different combination of the first gamut with the second gamut; and wherein the circuitry of the image processing device is further configured to select one of the plurality of matrices as the conversion matrix based on gamut metadata received from the image pickup device.