. Perspective for art students . re, by natural or artificiallight.(B) Finding and describing from views given in per-spective the actual dimensions, positions, and otherparticulars respecting the objects representedunder the conditions of any of the foregoing classesof subject (or in the case of shadows and reflections,ascertaining the position of the source of light,reflecting surface, etc.). Idicating how change of position, say of the spec-tator, of the object, or of the source of light, etc.,aifects the representation of the given objects, effects of distance on the appeara
. Perspective for art students . re, by natural or artificiallight.(B) Finding and describing from views given in per-spective the actual dimensions, positions, and otherparticulars respecting the objects representedunder the conditions of any of the foregoing classesof subject (or in the case of shadows and reflections,ascertaining the position of the source of light,reflecting surface, etc.). Idicating how change of position, say of the spec-tator, of the object, or of the source of light, etc.,aifects the representation of the given objects, effects of distance on the appearance of objects, shadows, out and correcting errors in perspective inrespect of given subjects. ADDITIONAL NOTES TO THEEDITION OF 1910. I. Peaotical Application of Perspective. Erect a sheet of glass, say about 30 x 20 inches, verticallyupon a table. Place on the table a strip of paper 1 foot wideand, say, 6 feet long, marked across into squares. Let thenarrow end of the paper touch the glass ; 12 inches in front EYE. Fig. i. of the glass make a station point on the table, and erect arod, say, 18 inches high, the summit of which is to be the eye. Placing your eye to the top of the rod, and looking at thepaper, draw, in water-colour, upon the glass, the image of thesquares on the paper. Fig. i. shows this arrangement. Fig. ii. shows the workingupon the picture. What do we learn from these ? That ourstrip of six squares becomes reduced in vision to a form which i xvi Additional Notes has its sides converging to ; that the front edge of thefirst square A A touches our picture, and is there actual 3 thatthe first square, AABB, is very distorted in the perspectiveview; that if we place a Distance Point, , as far alongthe horizon as the eye is from the , we can measure thelimits of the squares backwards. We find, in short, thatactual and geometrical perspective correspond. The square CD is free from distortion, and we come tothe conclusion that our picture nee
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