A refrigerator may include a detection device that detects at least one of a position or movement of a door of the refrigerator, a camera to capture an image of an area inside the refrigerator, and a controller to control the camera to capture the image based on the detected position or movement of the door. A start of a door opening operation and a door closing operation may be detected based on the detected position or movement of the door. When the door opening operation is detected, the camera is controlled to operate in a standby mode, and when the door closing operation is detected, an angle of the door is compared with a reference angle. When the angle of the door is less than the reference angle, the camera is controlled to operate in a photographing mode to capture the image of the area inside refrigerator.