This 23.6 x 23.6" OPTI-FLECS Blushed Filter from Rosco is specifically designed to alter and control the color of LED or solid-state light sources, especially in regard to the blue or green spike common to cool white LEDs. Requiring a 0.5 stop increase in exposure, this semi-rigid filter is designed to be placed in front of light sources in order to provide a warmer quality of light that is more flattering to skin tones.