The advance of photography : its history and modern applications (1911)

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148 THE ADVANCE OF PHOTOGRAPHY unloaded in daylight. If desired it can be fitted with an Anastigmat lens which works at //6-5 with a focal plane shutter. Panoramic Cameras. — Several cameras have been invented for obtaining a panoramic view. The angle included in the view varies, some Ficr. 64. of the better-class models being able to produce pictures extending over nearly 150°. In the type shown in fig. 65 the film is arranged in a curved manner at the back of the camera. When a button is pressed the lens swings round, and an Fig. 65. image is projected over the whole length of the exposed section of the film.