Few techniques can draw a viewer’s eye to a focal point—or save a busy photo—like selective blurring. However, what we're really talking about here is creating a shallow depth of field, which is the result of shooting in macro or portrait mode, or from using one of your camera's manual modes to specify a small f-stop (f1.8, f2, f2.8 and so on). This opens your camera’s lens (or aperture) wide, thereby reducing the size of the area which can be in focus.