The MFBD-S Mini Barn Door / Diffuser is a light modifier designed to fit on the front of a Frezzi Mini-Fill on-camera light. The unit's two adjustable side barn doors allow you to block off undesirable stray light, whether to reduce on-camera shadows, reflections off shiny surfaces, or to narrow the spread of light hitting your subject. The bottom swing-away diffuser softens the light when more flattering illumination is needed--for instance, when lighting a face.