Clear the Metz Mecabounce Diffuser MBM-02 is much more expensive than a no-name diffuser, but it has the enormous advantage that it so far purely pushes the lens of my Metz mecablitz 52 AF1 that this all may perfectly illuminated with the correct setting , That's not possible in almost all copies. In addition, the workmanship is very good, no frayed plastic at the edges and no wobbling on the flash unit. The MBM-02 sits securely on the mecablitz 52 AF 1.