1. An image pickup device comprising: an image pickup unit; a subject detecting unit configured to detect a predetermined subject from an image picked up through the image pickup unit; a determining unit configured to determine whether a subject for which an image capturing condition should be set exists on the image based on a result of the detection by the subject detecting unit, wherein the image capturing condition includes at least one of a focus setting, an exposure setting, a flash light amount setting, and a white balance setting; a determination unit configured to determine the subject for which the image capturing condition should be set before an image capturing instruction from a user is accepted in response to a result of the determination made by the determining unit being true; a notification unit arranged to notify the user of the subject for which the image capturing condition should be set determined by the determination unit before the image capturing instruction is accepted; an accepting unit configured to accept the image capturing instruction from the user; a setting unit configured to set the image capturing condition based on the determined subject determined by the determination unit in response to a result of the determination made by the determining unit being true and set the image capturing condition based on a result of the detection performed by the subject detecting unit after the image capturing instruction is accepted by the accepting unit in response to the result of the determination made by the determining unit being false; and an actual image capturing unit configured to control the image pickup unit so that actual image capturing is performed in response to a predetermined requirement being satisfied after the image capturing instruction is accepted under the image capturing condition set through the setting unit.