On the philosophy of painting: a theoretical and practical treatise.. (1849)
Twining, Henry · London, Longman, Brown, Green, and Longmans · leaf 389
nthe explanation. We will suppose the observer to be placed with hiseye exactly opposite the top corner, B, of a square pictureB C D E, Fig. 3, and at a distance equal to its width ;in which case, a line, /, drawn from his eye to thefurther corner of the picture, C, would meet the horizonat an… … APPLICATION OF THEORY IN PRACTICE. 341 server to its nearest corner, B, the other.* But thebottom corner of the picture, E, in consequence of itssquare form, subtends likewise an angle of 45° from thetop corner B, to the observer at A, situated at a distanceequal to its width. The line E C…
Painting · Aesthetics · Perspective
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