According to various embodiments, an electronic device may comprise: a first camera arranged on a first surface of a housing of the electronic device; a second camera arranged apart from the first camera on the first surface; a display; and a processor set to process at least a portion of a first inputted image by applying a first image effect and display same on the display, on the basis of a first object area for the first inputted image obtained by using phase difference information of the first inputted image from among the first inputted image obtained from the first camera or a second inputted image obtained from the second camera, and to process at least a portion of the first inputted image by applying a second image effect and displaying same on the display, on the basis of a second object area for the first inputted image obtained by using time difference information between the first inputted image and the second inputted image.