An image processing apparatus comprising: an imaging unit configured to use an imaging sensor to acquire a RAW image representing a pre-development image from imaging signals of a subject image; a reduction unit configured to reduce the RAW image to generate a reduced RAW image; a recording unit configured to record data of each of the RAW image and the reduced RAW image in a recording medium; a communication unit configured to communicate with an external apparatus; a control unit configured to control transmission and receipt of image data with the external apparatus via the communication unit to cause the external apparatus to perform editing processing on the reduced RAW image data; and a mode switching unit configured to switch the image processing apparatus to one of a plurality of modes, including a reproduction mode (202,204) and an edit mode, wherein, in the edit mode, the control unit is configured: to transmit, to the external apparatus, a reduced RAW image corresponding to the RAW image that has been recorded by the recording unit and is to be edited, and an edit command to cause the external apparatus to perform the editing processing of the reduced RAW image, to receive, from the external apparatus, edit information indicating the editing processing performed on the reduced RAW image by the external apparatus, and to edit the RAW image corresponding to the reduced RAW image by referring to the edit information. an imaging unit configured to use an imaging sensor to acquire a RAW image representing a pre-development image from imaging signals of a subject image; a reduction unit configured to reduce the RAW image to generate a reduced RAW image; a recording unit configured to record data of each of the RAW image and the reduced RAW image in a recording medium; a communication unit configured to communicate with an external apparatus; a control unit configured to control transmission and receipt of image data with the external apparatus via the communication unit to cause the external apparatus to perform editing processing on the reduced RAW image data; and a mode switching unit configured to switch the image processing apparatus to one of a plurality of modes, including a reproduction mode (202,204) and an edit mode, wherein, in the edit mode, the control unit is configured: to transmit, to the external apparatus, a reduced RAW image corresponding to the RAW image that has been recorded by the recording unit and is to be edited, and an edit command to cause the external apparatus to perform the editing processing of the reduced RAW image, to receive, from the external apparatus, edit information indicating the editing processing performed on the reduced RAW image by the external apparatus, and to transmit, to the external apparatus, a reduced RAW image corresponding to the RAW image that has been recorded by the recording unit and is to be edited, and an edit command to cause the external apparatus to perform the editing processing of the reduced RAW image, to receive, from the external apparatus, edit information indicating the editing processing performed on the reduced RAW image by the external apparatus, and to edit the RAW image corresponding to the reduced RAW image by referring to the edit information.