Diffuser cap for citi600 standard umbrella reflector (ad-r6 diffuser) This Diffuser Cap is designed for use with the PiXAPRO® CITI600 standard umbrella reflector. It simply clips onto the front of the reflector, to reduce contrast and specular highlights compared to using the reflector alone. Please Note: Designed for CITI600 Standard Umbrella Reflector only GBP 13.99 1