1. A multi display device comprising: a first body having a first display unit; a second body having a second display unit; a hinge unit to connect the first and second bodies to each other; a first imaging unit provided in the first body; a second imaging unit provided in the second body; and a controller to combine a plurality of photographed images to generate a panorama image content if photographing is performed by the first or second imaging unit when the first or second body pivots based on the hinge unit.