Light — Science & Magic, 6th Edition

REVEALING SHAPE AND CONTOUR 99

5.20

Details on the top of

this box are largely

obscured by direct

reflection. We could

remedy this by

keeping light sources

out of the family of

angles producing that

reflection.

for the front. (Most camera viewpoints require photographers to deal with

three families of angles, but it is easier to see them in a diagram showing

only the top and front.)

Our rst lighting decision is whether to produce direct reection or to

avoid it—whether, in other words, to place the light within or outside the

family of angles.

Figure 5.20 shows an antique wooden box with a very glossy nish.

Because it is so shiny, much of ...