This is stage lighting and explains why I often use the same kind of light in studio portrait sessions. Mine came from a dealer of used movie lighting. Made in Hollywood, they are simple, rugged and reliable. They are hot lights with tungsten lamps so leather gloves are needed to move and adjust them. It is worth the extra time and trouble.
Matinee Performance “Visions of Sugarplums” Cary Ballet Company 19 December 2015