Snelling, Henry Hunt, 1816-1897 · [New York : W.B. Smith] · leaf 323
to be copied ; c is theshield, and/ the dark slide coveringthe plate to protect it from the light. Camera Lucida.—An optical instrument,which, by means of a style, lenses andchamber, gives the outlines of externalobjects on paper, or canvas, so that anartist can sketch the subject. Camera… … presents one of this kind in common use.They are generally made of maple orblack walnut, having a cast iron socket(at) through which the sliding rod, b,t passes, into which the legs, c,c,c, with iron screw ferules are inserted. Theplatform, e, is made of two pieces,hinged together at the end…
Photography · Art and photography
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