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

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144 THE ADVANCE OF PHOTOGRAPHY The illustration (fig. 57) will make the essential parts more clearly understood. This shows the camera attached to a tripod stand, with pneumatic ball release, such as is used with it when a time exposure is desired. The small knob to be seen immediately above the junction of the tube with the camera is the Fig. 58. release used for the blinds when short exposures are given. The milled head and butterfly nut are the only permanent projecting parts. The finder seen on the top can be laid flat down when not in use. The diagram also shows the compactness of the camera and the rigidit}' of its front. While not possessing the same degree of movement as the front of the Sanderson hand camera, the lens board has a fair rise and fall, indeed, sufficient for all ordinary circumstances. The speed