Snelling, Henry Hunt, 1816-1897 · [New York : W.B. Smith] · leaf 300
at h must appear in thebackground from the increased divergenceof the eyes. The singular part of thiscase is, that only the right eye moveswhile the left eye. is stationary. A mereglance at any geometric stereoscopic pic-tures will at once show which parts shouldbe in the foreground and which in… … Diagram the pair of pictures produce op-posite effects to each other ; the parts whichstands out in one is behind in the other.The law just mentioned will explain it. Inthe upper pair a is nearer to a than b is toh /hence the part a will appear nearest, andvice versa in the lower pair of…
Photography · Art and photography
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