Amazon.com : Tiffen Diffusion Filters Camera Lens Sky & UV Filter, Black (49PEARL12) : Electronics
Tiffen BLACK GLIMMER 2 Filter 4 x 5.65"
Digital Diffusion FX Screw-In Filter - W49DDFX14 – The Tiffen Company
The Tiffen Company - Our Tiffen Pro-Mist and Black Pro-Mist are both diffusion filters that create halation around light sources. The Black Pro-Mist keeps more of the original contrast in the shadows