April 2021
Intermediate to advanced
336 pages
9h 54m
English
Content preview from Light — Science & Magic, 6th Edition
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REVEALING SHAPE AND CONTOUR 81
TONAL VARIATION
e second major depth clue is tonal variation. Tonal variation means that
there are both light areas and dark areas in the subject. If the subject is a
cube, ideal tonal variation means that the viewer sees a highlighted side, a
shadowed side, and a side that is partly shadowed. (We use “side” for conven-
ience. One of these sides could be the top of the cube, or even the bottom, if
the cube is suspended above us.) Good lighting does not always require this
ideal, but the ideal is still the standard we use to evaluate whatever lighting
exists.
DO LENSES AFFECT PERSPECTIVE DISTORTION?
When many ...
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