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Light painting, or light drawing, is a photographic technique in which exposures are made by moving a hand-held light source while taking a long exposure photograph, either to illuminate a subject or to shine a point of light directly at the camera. Light painting can also describe works where the camera itself is moved during exposure. Painting with a point of light on a long exposure dates back to 1889, and was used in Frank Gilbreth's work with his wife Lillian Moller Gilbreth in 1914, when the pair used small lights and the open shutter of a camera to track the motion of manufacturing and clerical workers. Man Ray, in his 1935 series "Space Writing," was the first known art photographer to use the technique. Photographer Barbara Morgan began making light paintings in 1940. == Techniques == Traditional light painting uses handheld lights to selectively illuminate or color parts of the subject or scene. Light painting requires a slow shutter speed, usually at least a second in duration. Light painting can take on the characteristics of a traditional painter. Light paintings can be created using a webcam. The painted image can already be seen while drawing by using a monitor or projector. Another technique is the projection of images on to irregular surfaces (such as faces or buildings), in effect "painting" them with light. A photograph or other fixed portrayal of the resulting image is then made. Kinetic light painting is achieved by moving the camera, and is the antithesis of traditional photography. At night, or in a dark room, the camera can be removed from the tripod and used like a paintbrush. An example is using the night sky as the canvas, the camera as the brush and artificially-lit cityscapes as the palette. Putting energy into moving the camera by stroking lights, making patterns and laying down backgrounds can create abstract artistic images. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「light painting」の詳細全文を読む スポンサード リンク
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