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ANIMATED PHOTOGRAPHY
No branch of photography has given more pleasure to the general public during the last year or two than that connected with the production of a continuous series of pictures representing the movements taking place in the world around us. Negatives for such a series are obtained by exposing a roll of films in a specially constructed camera. The positives formed from these films are projected in series upon a screen by means of a special lantern apparatus, in which the films are made to pass at a fixed rate, of so many per second, across the beam of light.
The origin of this process is by no means certain, although the credit for it is generally given to FrieseGreene and Evans, who in 1889 patented a process, or rather a machine, for obtaining photographs of this kind on celluloid.
There were, however, several inventions prior to that time which had for their object the representation of movements, some of these inventions dating back as far as1860.
In the same year as that in which Friese-Greene and Evans patented their process, Muybridge gave an exhibition of moving pictures at the Photographic Convention which was held at St James's Hall. In order to obtain the necessary photographs for this purpose, he employed a number of cameras, which were so arranged that the object, the movements of which were to be photographed, should pass in front of the cameras in succession. In its progress it came in contact with strings which released the shutters of the cameras. By this means a number of silhouettes were obtained, and
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