“The light that changed the world” is a 3 part special featuring commentary from cinematographers and those who have used the DLH4 over many years, for everything from feature films to single operator productions. The “classic” dedolight DLH4 was first brought to market in the mid-1980s and has become essential equipment for many lighting camera operators, crews, gaffers and cinematographers and is known throughout the world for its optical quality, versatility, and its amazing flood to spot ratio.