Blair: The Best Tunable White LightThe Aputure Storm 400x utilizes the Blair (Blue/Lime/Amber/Indigo/Red) light engine, delivering the highest quality white light and greatest +/- green adjustability of any Led technology. The Blair engine's indigo emitters enhance fluorescing materials like natural daylight and tungsten sources.The brightness of the Storm 400x matches or exceeds that of many higher wattage Led lights.Color Tuning ControlThe revolutionary Blair light engine can also output saturated colors across more than 70% of Rec.2020 color space using Limited Hsic+ and x, y control modes. Achieve deep crimson sunsets, rich sodium vapor ambers, and subtle color effects without gels.Compact PowerhouseThe Storm 400x is surprisingly bright, with output matching or exceeding many higher-powered Cob lights. Pair with the CF7 Fresnel lens for a powerful combination capable of over 23,000 lux at 3m.