The Source Four 750 Watt Black Ellipsoidal Spotlight combines the energy-saving power of the patented HPL lamp, with a dichroic reflector and optical-quality lenses. Source Four technology provides a clean white beam for unequaled imaging, crisp pattern projection, and a bright, even field. Rated for 375, 575 or 750 watts, the Source Four is perfect for punching through saturated colors and providing the longest throws. The optional EDLT lens tubes for 19 or 26° field angle models make the Source Four even better for ultra-crisp, high-contrast gobo projections. When fitted with a 750 watt HPL bulb, this fixture will provide a beam of 99 footcandles 17.9 ft (5.4 m) in diameter, from a distance of 40 ft (12.1 m). It will throw 53 footcandles 24.6 ft (7.5 m) in diameter, from a distance of 55 ft (16.6 m).