An electronic device, comprising: a display unit configured to display images and comprising a first display area and a second display area; at least a first camera module and a second camera module, wherein each of the first camera module and the second camera module is configured to acquire an image; and a controller configured to: synthesize a first image acquired from the first camera module and a second image acquired from the second camera module to generate a stereoscopic image; and control the display unit to display a first preview image in the first display area, wherein the first preview image is one of the first and second images (10a, 10b); control the display unit to display a second preview image of the stereoscopic image in a second display area of the display unit; characterized in that the controller is further configured to: receive, based on a position of a touch input received via a touch screen of the display unit, a selection of a specific point displayed at a touched point of the first preview image; and control the display unit to set in the second preview image the displayed depth of a point corresponding to said selected specific point to a predetermined depth. a display unit configured to display images and comprising a first display area and a second display area; at least a first camera module and a second camera module, wherein each of the first camera module and the second camera module is configured to acquire an image; and a controller configured to: synthesize a first image acquired from the first camera module and a second image acquired from the second camera module to generate a stereoscopic image; and control the display unit to display a first preview image in the first display area, wherein the first preview image is one of the first and second images (10a, 10b); control the display unit to display a second preview image of the stereoscopic image in a second display area of the display unit; characterized in that the controller is further configured to: receive, based on a position of a touch input received via a touch screen of the display unit, a selection of a specific point displayed at a touched point of the first preview image; and control the display unit to set in the second preview image the displayed depth of a point corresponding to said selected specific point to a predetermined depth. synthesize a first image acquired from the first camera module and a second image acquired from the second camera module to generate a stereoscopic image; and control the display unit to display a first preview image in the first display area, wherein the first preview image is one of the first and second images (10a, 10b); control the display unit to display a second preview image of the stereoscopic image in a second display area of the display unit; characterized in that the controller is further configured to: receive, based on a position of a touch input received via a touch screen of the display unit, a selection of a specific point displayed at a touched point of the first preview image; and control the display unit to set in the second preview image the displayed depth of a point corresponding to said selected specific point to a predetermined depth. receive, based on a position of a touch input received via a touch screen of the display unit, a selection of a specific point displayed at a touched point of the first preview image; and control the display unit to set in the second preview image the displayed depth of a point corresponding to said selected specific point to a predetermined depth.