-Mood -Theme -communication -shading/shadows -3d -perspective
box and triangle, camera. with legs, tripod. looks like a binwevile.
light looks like a bowl with streams.
-flat, no shadows, normally taken with a flash.
45 degree angle.
Semi-deep shadows, subject will look more 3D than in frontal, 2 or 3 point lighting.
135 degree angle
Volume, smaller facial features, hair, some glare, horror or drama.
Photo examples –