An over run lamp is a tungsten light source designed to operate at a higher voltage than standard, producing increased light output while maintaining a consistent colour temperature. This makes it ideal for studio and photographic applications where strong, stable illumination is required.
By running at higher voltage, over run lamps provide brighter lighting without altering the warm tone characteristic of tungsten bulbs. They are commonly used in film, television, and photography studios to ensure even, reliable lighting for both subjects and sets.