Complete perspective course : comprising the elementary and advanced stages of perspective, the projection of shadows and reflections, with exercises in theory and practice, also the practical application of perspective (1900)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan and co. · leaf 56
as radius, drawa circle. This is the iield of vision. In practice it is better to determine the radius of the baseof the cone by drawing a line from the point of distance, at anangle of 30 with the horizon line, to meet a vertical linetlirough the centre of vision, as shown in Fig. 34. INTRODUCTION… … Fig. -U its corner & to S; then ba represents the perspective length ofab on the picture plane. Comparing this length with ac, thefront of the cube, we shall find the receding side appears longerthan tlie front, thereby showing the distoition caused by tbevisual rays passing too obliquely…
Perspective
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