A method for adjusting images displayed on a television set, the television set being coupled to receive image information from an image-generating electronic device. The method includes displaying on the television set, using test image information from the image-generating electronic device, a test image. The method also includes receiving, from a human operator, user input. The method further includes employing the user input to form scaled test image information that corresponds to a scaled test image, the scaled test image representing a scaled version of the test image. The method yet also includes displaying on the television set, using the scaled test image information, the scaled test image on the television set in lieu of the test image.