Both improvement of a degree of freedom in selecting the model of the imaging device and improvement in accuracy of the image inspection are achieved by causing an imaging device conformable to a standardization standard to perform multi-stage processing in order. A setting device specifies a combination of values of a plurality of selectors for realizing multi-stage processing set by a user on a user interface, and transmits the values of the selectors and register information to the imaging device. The imaging device stores the values of the selectors in a location indicated by the corresponding register information, and sequentially executes the multi-stage processing specified by the combination of the values of the selectors.