The lights in the Lowel Omni 3 Kit have a wide focusing range, which make them flexible key lights or back lights. Add diffusion or an umbrella, and they become a soft fill source. When fitted with an FTK 500W bulb, each Omni-light will emit a beam of 75 footcandles at full flood, and 475 footcandles at full spot, from a distance of 10 ft (3 m). Although this kit is supplied for use with 120 AC voltage, it can function with 220-240 AC and 12-30 DC voltage, with the appropriate bulbs, adapter plugs or cables, and power supplies