File:Camera Obscura box18thCentury.jpg

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current22:31, 17 February 2011Thumbnail for version as of 22:31, 17 February 2011738 × 648 (153 KB)Ellin Beltz{{Information |Description ={{en|1=An artist drawing from life with an 18th century camera obscura, labeled: B (lens), M (mirror), O (line of light if mirror not in way). The artist used thin tracing paper to capture the outlines, transfered those to

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