Principles of cinematography : a handbook of motion picture technology (1953)

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THE CINEMATOGRAPH CAMERA 65 :r a ANGLE D Fig. 22.— Shutter "cut-off" efficiency. completely cover the aperture. The most efficient shutter will therefore be one of the largest possible diameter, with its centre placed at the maximum permissible distance from the aperture. The Metro-Goldwyn-Mayer 'Follow Focus" Device In the early days of studio work it was usual for the camera crew to take up a set position for each shot, and also for the actors to be rehearsed to control their movements to take place within the field of view of the camera. Under these conditions it was possible to measure the distance between the camera and the actors, set the focusing ring on the lens accordingly, and expect to get a reasonably sharp negative. Modern studio technique requires the maximum amount of freedom in movement, both for the actors and also for the camera. An outstanding example of this was given in the Eagle-Lion production 'A Place of One's Own'. In this picture Margaret FjELD COVERED BY CAMERA CAMERA LENS VIEWFINDER LENS CAMERA LENS VIEWFINDER LENS Fig. 23.— CameraViewfinder parallax.