Master Filter Kit by Formatt-Hitech, Ken Kaminesky edition
Amazon.com : Formatt Hitech Firecrest 85mm ND Starter Kit – Professional Grade ND Grad Camera Filters – Hyper Neutral Across All Light Spectrums – 85mm Hyper Neutral Density Camera Filter Kit for Beginners : Electronics
Review of the New Formatt Hitech Firecrest Filter Holder and Neutral Density Filters