1. An imaging device configured to perform continuous shooting, comprising: an imaging unit configured to capture an image of a subject; a memory configured to store continuous shooting control information indicating a value of a control parameter related to continuous shooting; an imaging control unit configured to cause the imaging unit to perform continuous shooting in accordance with the stored continuous shooting control information; and a grouping determination unit configured to determine, based on the stored continuous shooting control information, whether a series of image information are to be grouped together, the series of image information being obtained in one continuous shooting.