Gary Fong Lightsphere Universal Inverted Dome Cloud Diffusion System For CANON 540EX 420EX 550EX 430EX 580EX II 430EX II 270EX 380EX 320EX 600EX-RT + 5 Piece Camera Cleaning Kit Light Up the entire room Eliminate unwanted shadows Compatible with most on-camera flashes For wide-ranging use. As tested by Professional Photographers Magazine" "By far the best diffusion" as tested by Nikonians" Diffuser Enables your flash to illuminate an entire room for enhanced lighting Cloud design Warms the light emitted from your flash to help create more natural-looking images