a first imaging unit for which a zoom magnification is changeable;

a second imaging unit for which a zoom magnification is changeable, wherein the first imaging unit and the second imaging unit are movable on a circumferential guide;

a hardware processor; and

a memory for storing instructions to be executed by the hardware processor, wherein, when the instructions stored in the memory are executed by the hardware processor, the imaging device functions as:

a control unit configured to control the first imaging unit and the second imaging unit; and

wherein the control unit controls the first imaging unit and the second imaging unit so that the first imaging unit and the second imaging unit are separated from each other in a case where the zoom magnification of one of the first imaging unit and the second imaging unit is changed to a wide angle side.