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Camera obscura

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probably made in London

Camera obscura
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The camera obscura is an optical instrument which gives an image of a scene on a glass screen (all the optical components are missing from this example). If a sheet of paper is laid over this, then the outlines of the view can easily be traced. This example, now incomplete, was made around 1770, probably in London. It was used by William Henry Fox Talbot (1800-70), the photographic pioneer. Talbot's dissatisfaction with this, and other drawing aids, led him to explore the possibility of preserving images chemically on paper.

This is now merely an oak box with decorative hinges, but would once have had a horizontal ground glass screen, an interior mirror sloping at 45 degrees, and a lens panel at the front to project the image on to the screen through the mirror. It is marked in ink 'John Talbot, Lacock', who was W.H.F. Talbot's great uncle who died in 1778.

Talbot heard about Louis Daguerre's (1789-1851) experiments, and rushed into print, fearing that his experiments had been preempted. However, the two processes, although both producing images from light and chemicals, could not have been more different. It was Talbot's process, capable of producing many images from a single exposure, which was to prove to be the ancestor of modern photographic processes.

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