A stereoscopic image with a predetermined parallax can be automatically taken, and a stereoscopic image with an arbitrary parallax can also be taken based on selection made by a photographer. An imaging apparatus includes two or more imaging systems. First, a guidance indicating that a first imaging system is used to take a first image and that a second imaging system is used to take a second image, is displayed on a monitor of the imaging apparatus. After the first image is shot by the first imaging system, a live view image shot by the second imaging system is displayed in a semi-transparent manner with the shot first image on the monitor, and a guidance is also displayed on the monitor. When the release switch is depressed, the second image is shot by the right imaging system.