A method of controlling a display apparatus displaying a picture according to an input video signal including a horizontal synchronous signal and a vertical synchronous signal includes setting one or more exclusive display modes, setting whether to apply an auto-adjustment function to the video signal, determining a display mode of the video signal according to the horizontal and vertical synchronous signals when the auto-adjustment function is set to operate, and performing the auto-adjustment function when the determined display mode is not equal to any one of the one or more exclusive display modes. The display apparatus and the control method thereof selectively perform the auto-adjustment function according to the display mode of the input video signal.