Light and shadow.

Light and shadow is the key to a good picture, Light and shadow makes a picture have the emphasis that that picture will need to make the vewier interged to look. The lighter parts on the picture is what attracts are eyes the most, Light and shadow can show the texture of something the way the light and shadow catches the groves and bumps. If you dont use you lighting properley it can make you picture very grainy and white depending if you use to much light!