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ALLVISION  1976

AN ELECTRO/OPTO/MECHANICAL ENVIRONMENT BY STEINA
ALLVISION incorporates and transforms physical space through video. In this installation, Steina transfigures the viewer’s orientation: a constructed physical space is engaged in conversation with the perceptual systems of the human eye and the camera lens.
ALLVISION poses questions about the process of transcribing all-encompassing space and the ways in which perception can be altered or exaggerated by a mechanical interface.The machine allows a view of what would otherwise be impossible to perceive; it privileges vision to experience the implausible and fantastic.
— MARITA STURKEN
 
D E S C R I P T I O N
A mirrored sphere, positioned in the middle of a crossbar reflects the image of surrounding space. Two video cameras, attached to each end of the crossbar are looking in at the mirrored surface. The crossbar now an assembly of mirrored sphere and two cameras slowly rotates on the turntable with cameras orbiting the sphere. Since each camera sees half of the reflected space, the whole space becomes observable.
The turntable, which sits on a low pedestal, holds the driving mechanism for the rotation — a slip-ring assembly and a DC motor. The slip-ring assembly provides uninterrupted video signals from, and power to, the cameras. The video signal from two cameras connects to two (or more monitors) arranged in the exhibit space.