88

The angle of sight varies with the distance.

[figure]

Objects of equal size, situated in various places, will be seen by different pyramids which will each be smaller in proportion as the object is farther off.

Taken from The Notebooks of Leonardo da Vinci edited by Jean Paul Richter, 1880.

87 * 89
I * III
Notebooks of Leonoardo da Vinci
II: Linear Perspective.
. . .
That the contrary is impossible.
68
A parallel case.
69
The function of the eye as explained by the camera obscura.
70,
71
The practice of perspective.
72,
73
Refraction of the rays falling upon the eye.
74,
75
The inversion of the images.
76
The intersection of the rays.
77,
78,
79,
80,
81,
82
Demomstration of perspective by means of a vertical glass plane.
83,
84,
85
The angle of sight varies with the distance.
86,
87,
88
Opposite pyramids in juxtaposition.
89
On simple and complex perspective.
90
The proper distance of objects from the eye.
91,
92
eye.
93,
94,
95,
96,
97,
98
The apparent size of objects defined by calculation.
99,
100,
101,
102,
103,
104,
105,
106
On natural perspective.
107,
108
. . .