The Fotodiox 500 and 1000 Pro LED Light Panels are amazingly bright and cool running constant source lights for photographers and filmmakers alike. These LED lights are built to last with durable all-metal construction and include adjustable metal barn doors for controlling the angle of the light. V-lock battery mounts offer hours of cordless operation using long-lasting rechargeable V-Lock batteries. The Fotodiox Pro LED Light Panels are also dimmable - you control the amount of light on your subject. The 1000ASVL has additional control over the light's color temperature. Go from cooler to warmer colored light with a wide range in between.