Method Seven HPS Camera Lens Photo Filter Grow Room Glasses With our photo filter, photographers and videographers can shoot in the harsh yellow light spectrum found under hps lights, and get perfect white balanced imagery and stunning results. Precision German glass filter lens with our patent pending Rendition Perfect Color HPS technology, housed in anodized aluminum and compatible with any camera fitted with a Cokin Get amazing perfect color under HPS lights Requires Cokin P Holder (NOT INCLUDED)