What aspect ratios are considered portrait aspect ratios?
Several aspect ratios are classified as portrait and portrait widescreen displays. 10:16 and 9:16 aspect ratios are widescreen format displays used in portrait mode. 4:5 and 3:4 aspect ratios are standard format displays used in portrait mode. Please reference the ViewGuard® Display Calculator to determine the aspect ratio of the display you are using to view this webpage.