The Gary Fong Prizm 52 Flash Diffuser is a light modifier measuring only 2 x 2 x 3.5 (50.8 x 50.8 x 88.9mm) which comfortably fits the Canon Speedlite 220EX or other similar-sized flash units. It attaches to the flash with a touch fastener and will help soften shadows by scattering the light throughout the room evenly. The Prizm 52 allows light to travel up towards the ceiling to achieve excellent room light while simultaneously allowing light to travel forward for a nice full flash effect.