Folding tent-type camera obscura, 1800-1824.
2 9 c m
actual image size: 32cm x 21cm

Folding tent-type camera obscura, 1800-1824.

© Science Museum / Science & Society Picture Library


A tent-type camera obscura that has been dismantled and folded back into the box forming its base. Made during the early 19th century, it consists of an adjustable right-angle mirror held in a framework that rotates vertically aloft a tent-like structure. Within the darkened confines of the contrivance, the artist is able to outline in pencil the view projected onto their paper by the instrument's optics. Camera obscuras were known to the ancient Greeks and Chinese, and were used by Arab astronomers in the 10th century to observe the Sun. During the Renaisance period, artists used camera obscuras to help them to draw more accurately.

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