In the photo on the left, I did not use a flash. There are harsh shadows all over the girl’s face, to the point where you cannot even see her eyes. By popping up the flash, even outdoors in winter, you can eliminate the harsh shadows on a bright sunny day and capture a much more flattering portrait of your subject. This is called fill flash. I had my camera in regular program (not green box) mode and popped up my flash to get the photo on the right. Now there’s the eyes! And notice how the camera/flash system automatically balances the daylight with the flash to maintain the saturation in the blue sky, brown trees and green grass.