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| HOW TO USE YOUR NEW CAMERA LUCIDA | ||
Latin for 'light chamber', the Camera Lucida, is an optical instrument that was invented in 1807 by William Hyde
Wollaston to facilitate accurate sketching of objects.
It consists of a prism with one reflective surface mounted on a small stand above a sheet of paper.
The Camera Lucida works on a simple principle.
By looking into the prism from just the right angle, two images will enter the eye; one, of the object to be
sketched, the other of the pencil and paper with which you intend to work with.
The resulting effect is that your eye perceives the object as if it is actually on the paper.
You may then trace the image with the pencil.
Light rays from the object are passing through the prism,
and are reflected at an angle of 90° thereby putting these rays in the same line of sight as the paper and pencil.
Your eye allows the image of the object to enter the upper part, and the image of the paper and pencil to the lower part,
perceiving both at once and in the same plane.
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