In a communication system, a data processing terminal transmits a request for obtaining processing information for a specific service to one of an image acquisition terminal and a data processing server; receives a response including processing information from the one of the image acquisition terminal and the data processing server, the processing information indicating processing to be executed by at least one of the image acquisition terminal and the data processing server in providing the specific service; and transmits the processing information to other one of the image acquisition terminal and the data processing server, to cause the other one of the image acquisition terminal and the data processing server to configure settings based on the processing information and execute processing on the captured image data according to the settings.