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thumb:''For other uses see Camera obscura (disambiguation)''The camera obscura (Lat. ''dark chamber'') was an optical device used in drawing, and one of the ancestral threads leading to the invention of photography. Photographic devices today are still known as "cameras".The principle of the camera obscura can be demonstrated with a rudimentary type, just a box (which may be room-size) with a hole in one wall, (see Pinhole cameras for construction details).
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