A method for visually indicating a degree of focus for regions of an image, the method comprising: detecting an image using at least one imaging sensor; providing the image detected by the image sensor on a display; applying an algorithm operating on one or more processors to determine a degree of focus for a region of the image; providing a visual indication of the degree of focus on the display; setting the visual indication to a first size corresponding to a first degree of focus; and in response to user adjustment of focus and to a corresponding change in the determined degree of focus from the first degree of focus to a second degree of focus higher than the first degree of focus, changing the size of the visual indication; providing the visual indication comprises a rectangle or an ellipse, wherein the visual indication is displayed superimposed on the image on the display so that a center of the visual indication substantially coincides with a center of the region of the image; and the visual indication is changed to a second size that is smaller than the first size, so that the center of the visual indication remains stationary relative to the center of the region of the image; the method further comprising applying an algorithm operating on the one or more processors to determine a degree of focus for a second region of the image; providing a second visual indication of the degree of focus for the second region on the display, the second visual indication comprising a rectangle or an ellipse, wherein the second visual indication is displayed superimposed on the image on the display so that a center of the second visual indication substantially coincides with a center of the second region of the image; and the second visual indication is changed to a second size that is smaller than the first size, so that the center of the second visual indication remains stationary relative to the center of the second region of the image, and setting the second visual indication to a first size corresponding to a first degree of focus for the second region; and in response to user adjustment of focus and to a corresponding change in the determined degree of focus for the second region from the first degree of focus for the second region to a second degree of focus for the second region higher than the first degree of focus, changing the second visual indication to a second size that is smaller than the first size. detecting an image using at least one imaging sensor; providing the image detected by the image sensor on a display; applying an algorithm operating on one or more processors to determine a degree of focus for a region of the image; providing a visual indication of the degree of focus on the display; setting the visual indication to a first size corresponding to a first degree of focus; and in response to user adjustment of focus and to a corresponding change in the determined degree of focus from the first degree of focus to a second degree of focus higher than the first degree of focus, changing the size of the visual indication; providing the visual indication comprises a rectangle or an ellipse, wherein the visual indication is displayed superimposed on the image on the display so that a center of the visual indication substantially coincides with a center of the region of the image; and the visual indication is changed to a second size that is smaller than the first size, so that the center of the visual indication remains stationary relative to the center of the region of the image; the method further comprising applying an algorithm operating on the one or more processors to determine a degree of focus for a second region of the image; providing a second visual indication of the degree of focus for the second region on the display, the second visual indication comprising a rectangle or an ellipse, wherein the second visual indication is displayed superimposed on the image on the display so that a center of the second visual indication substantially coincides with a center of the second region of the image; and the second visual indication is changed to a second size that is smaller than the first size, so that the center of the second visual indication remains stationary relative to the center of the second region of the image, and setting the second visual indication to a first size corresponding to a first degree of focus for the second region; and in response to user adjustment of focus and to a corresponding change in the determined degree of focus for the second region from the first degree of focus for the second region to a second degree of focus for the second region higher than the first degree of focus, changing the second visual indication to a second size that is smaller than the first size.