A display apparatus (which may be included in an imaging apparatus) includes: a display unit; a guide display generation circuit which acquires an image file including image data and photographing posture data including information of an inclination and a height of an imaging apparatus performing an imaging operation when the image data was created by the imaging operation to generate a photographing posture guide display based on the photographing posture data; and a display control circuit which causes the display unit to display an image based on the image data and the photographing posture guide display. A data processing apparatus may include a signal processing circuit which creates an image file including image data and photographing posture data.