I work in a big production film set and there is a great need for fill light for most of the scenes. Got 4 units of this model and we achieved exactly the desired effect of 'sky lights". These are great also for green screen setups. They are very powerful but caution must be taken, as they tend to heat the space pretty much. And also we liked that they came packed by 2 in a single box, to minimize the shipping cost. Great services Cinelight!