1. An image processing method of an image capturing apparatus, comprising: capturing an image; generating intermediate image data by primarily processing the captured image; displaying a graphic user interface (GUI) including an image quality selection menu to set an image quality level of a final image; receiving a user input to set the image quality level of the final image; generating final processing data including the set image quality level of the final image based on the received user input; and transmitting the intermediate image data and the final processing data to an external image processing apparatus to apply the final processing data to the intermediate image data to generate the final image.