Light — Science & Magic, 6th Edition

SURFACE APPEARANCES 59

DOING THE IMPOSSIBLE

e preceding examples tell us that even illumination and glare-free illumi-

nation can be mutually exclusive goals. e closer the light source is to the

camera, the more directly it lights the subject and the more even the illumi-

nation becomes. However, the farther the light is to the side, the less likely it

is to be within the family of angles that causes direct reection.

We have also seen that the usual solution to this dilemma requires more

working space in any direction. Here is why:

• Moving the lights closer to the camera axis, for example, means moving

the camera farther away from the subject (and using a correspondingly

longer lens to get a similar image size). is creates a smaller ...