A method for capturing an image includes obtaining location coordinates of an electronic device when a camera device enters a preview mode. Images are obtained according to the obtained location coordinates. The obtained images are displayed on a display device. One of the obtained images is set to be a reference image. Orientation parameters of the reference image and orientation parameters of the electronic device are obtained. One or more difference values are calculated using the obtained orientation parameters. The one or more difference values are displayed on the display device according to one or more indicating icons. Once an adjustment to the orientation of the electronic device is ended, the camera device is controlled to capture an image.