... "point source" of the soft mask, Lambency Flash Diffuser "bowl of light" Flash Diffuser can diffuse throughout the soft light inside ... to 38mm Model Size Reference Compatible Flash C1/P1 Width 62-65mm, Height 39-42mm Nikon SB600/SB800/SB800DX/SB28/SB28DX/ ... 380EX, 420EZ Nikon Speedlite SB-24, Nikon Speedlite SB-25, Nikon Speedlite SB-26, Nikon Speedlite SB-27, Nikon Speedlite SB-28, Nikon Speedlite SB- ...