Camera Obscura

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“An optical instrument employed for exhibiting the images of objects in their forms and colors, so that they may be traced and a picture drawn, or may be represented by photography. A simple camera obscura is presented by a darkened chamber into which no light is permitted to enter excepting by a small hole in the window-shutter. A picture of the objects opposite the hole will then be seen on the wall or on a white screen placed opposite the opening.” — Winston’s Encyclopedia, 1919


Editor in Chief Charles Morris Winston's Cumulative Loose-Leaf Encyclopedia (Philadelphia, PA: The John C. Winston Company, 1918)


TIFF (full resolution)

2400×2042, 1.4 MiB

Large GIF

1024×871, 175.2 KiB

Medium GIF

640×544, 84.3 KiB

Small GIF

320×272, 28.4 KiB