... "point source" of the soft mask, Lambency Flash Diffuser "bowl of light" Flash Diffuser can diffuse throughout the soft light inside ... 420/ 430 Vivitar 273/2800/550/560D Minolta 3600HSD Yongnuo 460/460 II C2/P2 Width 64-68mm, Height 35-38mm ... Canon Speedlite 380EX, 420EZ Nikon Speedlite SB-24, Nikon Speedlite SB-25, Nikon Speedlite SB-26, Nikon Speedlite SB-27, Nikon Speedlite SB-28, Nikon Speedlite ...