The F&V Lighting K4000S Bi-Color LED Studio Panel Light sports 400 pure color power LEDs, offering 2490 Lux at 1 meter in a self-contained 1 x 1' unit. Carefully selected LEDs are put through multiple tests and evaluations to ensure perfect color balance and diode matching. This offers an absolute pure color consistency between LEDs and a clean calibrated color from tungsten to daylight (3200K - 5600K). The F&V Lighting has also introduced an all-new Milk-White Diffusion Filter with K4000, a dense diffusion filter that creates a true soft-box effect. The filter itself sits 5 cm in front of the light, held in place by four support rods. With the filter being offset from the face of the light, it allows the diffusion filter to be illuminated evenly and creating a proper single light source. Not only does these offers an ultra-soft light but creates just a single shadow. Unlike most 1'x1' panels with open face LED sources which have the tendency for each diode to create cross-angled shadows, the Milk-White Diffusion Filter eliminates this problem, giving you an ultra-soft bright light source.