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Talking Pictures
rails, a score or hundreds of feet if needed. When moved in this manner, the effect achieved is called a "trucking shot." When the camera moves in a quarter or half circle sideways on its own stationary axis, its action is referred to as "panning."
Another form of camera platform is the "boom." The boom is of duralumin, or very light steel, and, when horizontal, extends forward some twenty odd feet from a rear weighted base. For "shots" following persons up a stairway or climbing a tree, it can shoot its full length almost directly upward and swing in a complete circle. There is also a smaller boom which duplicates the work of the rotumbulator.
The head cinematographer, or director of photography, never physically touches the camera, except to satisfy himself anent pictorial composition adjustments. He stands near it, usually in discussion with the "gaffer" or head electrician. The "gaffer" may have under him six or a hundred electricians, depending on the lighting required.
At the request of the cameraman the gaffer gives orders, "Kill that spot," meaning turn off the spotlight; "Give me that rifle right over here," meaning turn the beam of that special focused light on this or that player; or "Silk that broad," meaning put a wood frame covered with light gray silk over that "broad," or type of floor lamp, in order to cut down its illumination. By these and other instructions, couched in equally vivid and exclusive slang, the illumination of the scene proceeds until it completely satisfies the trained eye of the head cinematographer.
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