1. An apparatus for previewing an image, the apparatus comprises a camera, a memory, and one or more processors, wherein the memory is configured to store one or more computer readable program codes, and the one or more processors are configured to perform the one or more computer readable program codes to perform: obtaining and updating in real time color temperature parameters and automatic exposure parameters of a current scene; obtaining an image of the current scene using the camera upon reception of an instruction for starting the camera; and correcting color temperature and brightness of the obtained image using the color temperature parameters and automatic exposure parameters of the current scene updated in real time; and outputting the corrected image as a preview image.