1. A mobile terminal comprising: a camera; a touch screen; and a controller configured to: receive an image signal through the camera, display, on the touch screen, a preview image corresponding to the image signal and a basic capture icon; receive, via the touch screen, a first touch input in a state where the preview image and the basic capture icon are displayed on the touch screen; display, on the touch screen, a plurality of further preview images as further capture icons that apply different image-setting information, respectively, in response to the first touch input, wherein the plurality of further preview images as the further capture icons is displayed by processing the image signal based on the different image-setting information, wherein the plurality of further preview images as the further capture icons is displayed with the preview image and the basic capture icon, and wherein the further capture icons are changed in real time based on the image signal received through the camera, receive, via the touch screen, a second touch input applied to one of the plurality of further preview images in a state where the preview image, the basic capture icon and the plurality of further preview images as the further capture icons are displayed on the touch screen, and control the camera to capture an image and process the captured image to apply image-setting information corresponding to the one of the further plurality of preview images to the capture image, in response to the second touch input.