The optional Black Diffusor (silver reflector) offers the lighting effect of a direct softbox with single diffuser, with the central position of the Elinchrom head offering a more symmetrical result.
Use of this diffuser with a deep umbrella helps to minimize light spill.
Allows for a bit more of a specular light.
Silver interior helps to give your images a more harder edge light effect.
Couple this diffuser with a deep umbrella and you have the perfect versatile travel tool to shape lights.