Light Art Photography
Light painting, painting with light, light drawing, or light art performance photography are terms that describe photographic techniques of moving a light source while taking a long exposure photograph, either to illuminate a subject or space, or to shine light at the camera to 'draw', or by moving the camera itself ...
Light painting using handheld lights to selectively illuminate or colour parts of the subject or scene or to evenly light large architectural interiors has been used in professional photography since the 1930s as described by Leslie Walker and Ansel Adams. Light painting requires a slow shutter speed, usually at least a second in duration. Light painting can imitate characteristics of traditional painting; superimposition and transparency can easily be achieved by moving, adding, or removing lights or subjects during or between exposures.
Projector light painting, by waving a white translucent flash diffuser in the light path of a portable projector, the continuous motion creates an invisible screen in the air for the projected image in the photo.
Light paintings can be created using a webcam.[clarification needed] 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.
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