a photography technique in which the camera flash is used to shine the darker parts of an image, like the person. When the subject is underexposed from low amounts of sunlight, fill flash is used to add more light. With the right amount of fill flash, you can make excellent photos. An experienced photographer with an good technique can make use of the fill flash for landscape photography. Proper use of the fill flash will lighten up the foreground eliminating the shadows from it to show a great portrait using the fill flash, angle the sun with the object put the subject in a way so that the sun is behind the back of the subject to properly use fill flash