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THE CINEMATOGRAPH CAMERA
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identification of the succeeding shot had been established. Secondly, considerable time was lost when re-takes were made immediately after an unsuccessful 'take' and, thirdly, extra footage was often lost in ensuring that the assistant, carrying the identification board, had walked out of the field of view of the camera.
With these objections in mind, the Camera Department of Paramount Picture Corporation designed an improved 'sceneslating attachment', capable of use with a wide variety of cameras and equipments. Scene slating is the name given to the process of identifying individual shots or 'takes'. The general arrangement of this device is seen in Figure 26. A small housing 'B' is attached to the main camera body, or to the mounting on which the camera is supported, by a mechanism engaging with bearing 'A'. Contained within housing 'F' is a series of rotatable rings, each carrying numbers and letters formed on their periphery in a manner similar to that found in a footage counter or speed indicator. These numbers are suitably arranged, together with any other identification, at the face 'E', known as the 'slate'. This face is illuminated by small lamps shown at 'D\ By the arrangement of lenses and mirrors shown in the illustration, the normal camera lens will photograph the slate when the housing is supported in front of the camera as shown.
When not in use this device is swung downwards, out of the camera field of view, by pivoting it about point 'A'. Arrangements are also made to illuminate the slate only when it is brought
Fig. 26. — Scene identification unit by Paramount Corp.