Demo 5 The Use of Feathering when Photographing Groups

Feathering is taking advantage of both the characteristics of the inverse square law and the characteristic that the intensity of the light diminishes toward the edges of the light pattern given off by a particular light source. The closeness of the light to the subject, how it is placed and which direction it is pointed come into play. The light meter is valuable is determing the effectiveness of feathering. By reading the light from left to right and top to bottom then moving the light until the reading are within an acceptable range (I try for a 1/3 stop difference).