A program causes an information processing device to execute: starting image capturing by using a camera communicably connected to the information processing device; changing a parameter for the image capturing by using the camera to a predetermined first value during the image capturing by using the camera; and changing the parameter to a predetermined second value. Therefore, it is possible to assist in manual operation of the image capturing parameter. This makes it possible to easily achieve a more detailed and accurate image capturing parameter operation, which in turn easily achieve an advanced image capturing technique.