An imaging device includes: an area setting unit which sets a first area and a second area other than the first area on the captured image acquired by an imaging unit; a main subject setting unit which sets a main subject based on the captured image acquired by the imaging unit or another image; a subject tracking unit which periodically detects the position of the main subject on the captured image acquired by the imaging unit; a variable power unit which zooms on a zoom-up side or a wide angle side; and a control unit which directs the variable power unit to zoom on a wide angle side when a zoom state of the variable power unit is on a zoom-up side and the main subject exists in the second area, wherein the variable power unit zooms according to the direction of the control unit.