The video light includes an adjustable Fresnel lens to help focus the light and provide a longer throw. When used without the lens, the light becomes a wider flood and the included barn doors help to control the spill. This versatility allows you to go from a tight spot to a wide flood all in one continuous light. Built specifically to be used on set the light features a housing that is designed to dissipate the heat during continuous use.CAME-TV engaged an independent lab to conduct standardized photobiological testing on the Boltzen series lights to which they passed.