An electronic device comprising: a memory; a communication module; and a processor, wherein the processor is configured to: identify a raw image; perform image processing according to a designated first image signal processing set, on the raw image; transmit the raw image on which at least partial processing of the designated first image signal processing set is performed, to an external electronic device by using the communication module, during the performing of the image processing; and transmit information corresponding to the at least partial processing to the external electronic device such that the external electronic device skips processing corresponding to the at least partial processing among a designated second image signal processing set included in the external electronic device by using the raw image on which the at least partial processing is performed, wherein the designated image processing set comprises image processing modules and the information corresponding to the at least partial processing comprises information concerning at least one of said image processing modules and regarding whether image processing is already performed by said image processing module. a memory; a communication module; and a processor, wherein the processor is configured to: identify a raw image; perform image processing according to a designated first image signal processing set, on the raw image; transmit the raw image on which at least partial processing of the designated first image signal processing set is performed, to an external electronic device by using the communication module, during the performing of the image processing; and transmit information corresponding to the at least partial processing to the external electronic device such that the external electronic device skips processing corresponding to the at least partial processing among a designated second image signal processing set included in the external electronic device by using the raw image on which the at least partial processing is performed, wherein the designated image processing set comprises image processing modules and the information corresponding to the at least partial processing comprises information concerning at least one of said image processing modules and regarding whether image processing is already performed by said image processing module. identify a raw image; perform image processing according to a designated first image signal processing set, on the raw image; transmit the raw image on which at least partial processing of the designated first image signal processing set is performed, to an external electronic device by using the communication module, during the performing of the image processing; and transmit information corresponding to the at least partial processing to the external electronic device such that the external electronic device skips processing corresponding to the at least partial processing among a designated second image signal processing set included in the external electronic device by using the raw image on which the at least partial processing is performed, wherein the designated image processing set comprises image processing modules and the information corresponding to the at least partial processing comprises information concerning at least one of said image processing modules and regarding whether image processing is already performed by said image processing module.