The PLMR 7” Umbrella Reflector is used in conjunction with the PLM™ Parabolic Light Modification System. The reflector fits on the front faceplate of Paul C. Buff, Inc.™ flash units and directs all of the light onto the 16-segment parabolic surface in an exact 180° field. The PLMR is an optional component of the PLM™ System-- when used with the PLM™ umbrellas it will block any undesired side spill, but is not necessary in most uses.