A camera lucida is an optical device used as a drawing aid by artists and microscopists. By looking through the prism in its standard, a user sees an optical superimposition of the subject positioned in front of the device over the surface below.
A camera lucida is an optical device used as a drawing aid by artists and microscopists. By looking through the prism in its standard, a user sees an optical superimposition of the subject positioned in front of the device over the surface below.
Source: Wikipedia "Camera lucida" · CC BY-SA 4.0
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