The 33" Black/Silver Studio Umbrella from FotodioX will soften and broaden the light output of any strobe or lower-wattage constant light. This model features a reflective silver nylon interior to provide a crisper, more focused light, revealing structure and detail in your subjects. The umbrella also has a black backing to minimize light loss and light spill while maximizing output. Silver umbrellas add 1/2 to 1 f-stop of light output depending on the light source used. Works with studio lights that include a built-in umbrella receptacle for mounting.