Genuine Sto-fen Omni-Bounce Diffuser OM-MZ40. GENUINE & OFFICIALSto-fen Omni-Bounce flash diffuser. Used by pros worldwide. This diffuser (OM-MZ40) is for use with the following flashguns. The cheap versions are NOT the correct density and are NOT the correct opacity resulting in poorer results and reduced flash range.
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