On the philosophy of painting: a theoretical and practical treatise.. (1849)
Twining, Henry · London : Longman, Brown, Green, and Longmans · leaf 380
ed, in the inverse ratioof the squares of the distances. The other, which isdetermined by the unequal influence of this diminution,depends on the different degrees of obliquity underwhich the surfaces of objects are seen. Now the first result, namely the diminution due todirect recedence, is… … 334 LINEAR PERSPECTIVE. called the point of sight. All such lines, being parallelto the visual ray, arc perpendicular to the canvas.The perspective diminution of objects which recededirectly from the observer, is rendered by the decreasingintervals between these lines at successive distances…
Painting · Aesthetics · Perspective
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