Ikelite 2172 M46 Warming Diffuser for VegaThreads onto the front of the Vega Video + Photo Light and other lights with M46 (46mm) thread to warm and spread out beam. The beam's color temperature is reduced by approximately 500K, providing an overall warmer image and more natural skin tones underwater. Provides 100 degree angle of coverage when used with the Vega and reduced light output by approximately one f stop.