I. Prolegomena and General Introduction to the Book on Painting: 14.

14.

ON THE THREE BRANCHES OF PERSPECTIVE.

The plan of the book on Painting (14--17).There are three branches of perspective; the first deals with the reasons of the (apparent) diminution of objects as they recede from the eye, and is known as Diminishing Perspective.--The second contains the way in which colours vary as they recede from the eye. The third and last is concerned with the explanation of how the objects [in a picture] ought to be less finished in proportion as they are remote (and the names are as follows):

Linear Perspective.
The Perspective of Colour.
The Perspective of Disappearance.

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