When you take pictures or videos with an SLR or DV, the effect is always affected by inadequate lighting. The LED light can provide an adequate and steady light source. It features the latest LED-driven technology, unique angle design of barn doors to enlarge the illumination range and strengthen the brightness. The LED light is flicker-free and is easy to use and reliable. The LED light has a rotating potentiometer for adjusting brightness. It can use a Sony NP - F series battery as power source, with functions of checking remaining capacity.