Back lighting position
(3) The camera is at 6 o'clock position and subject is in center.
Backlight should be positioned at 12 o'clock at a 45-degree angle.
(4) Too much back light causes a halo effect.
(5) With too little back light it appears that the subject blends into
c. Fill light softens undesired shadow densities. Reduce contrast between
shadows and light.
between highlights and shadows (fig 4-13).