CAMERA LUCIDA-SIMPLE MICROSCOPE
MAKER: Unknown
c. 1790-1810
Collection of: Dr. Joseph Zeligs
It has Wollaston's original swiveling 'pupil guide' to help position the eye such that the upper portion of the pupil faces the prism and sees the subject to be drawn and the lower portion of the pupil faces the drawing paper. There are also two integral hinged corrective lenses, as advocated by Wollaston, which serve to roughly equalize the accommodation required by the user's eye to the paper versus the subject. For those who are far—sighted, the convex lens swings below the prism, facing the drawing. For those with near—sighted vision, the concave lens is swung between the prism and the subject.