Source Four LED Series 2 luminaires feature the same size, look, optics and beam angles as a conventional Source Four fixture, with the efficiency and energy savings of an LED. They also use the same barrel, so you can easily retrofit your inventory. For the highest-quality, controllable beam, Source Four LED Series 2 luminaires can accept any standard Source Four lens tubes, plus a special LED-only 50° lens tube. You can achieve the best results when using a Source Four EDLT (Enhanced Definition Lens Tube), which makes the beam crisper and cleaner. And you can turn your Source Four LED Series 2 luminaires into powerful cyc lights, by attaching a Source Four LED CYC™ adapter. Your backdrops have never been brighter or more beautiful.