Firecrest Ultra are the next generation in Neutral Density filtration for photographers.Firecrest remain (December 2017) the only professional grade filter that is bonded to protect the coating in the centre of the filter giving the filter enhanced durability over coated products and protecting your investment.With Firecrest Ultra we have taken this process one step further and we now "lap and polish" the filters, a process previously only carried out on our cinema grade filters. So as well as the superb neutrality and durability that Firecrest deliver, the filters now benefit from enhanced clarity and sharpness and are the most optically flat photographic ND filters in the world, regardless of focal length.Firecrest Ultra Soft Edge Graduated filters are available in 100x150mm and densities from 1 to 5 stops.- Reduce Exposure in Selective Areas- Soft-Edge Filter, Ideal for Wide Lenses- Secondary Lapping and Polishing Process- 15-Layer Coating on Outside of Filter- Hydrophobic and Scratch-Resistant- 2mm-Thick Schott Superwite Glass- Fits Formatt-Hitech 100mm Filter HolderIn the Box:- Formatt Hitech 100 x 150mm Firecrest Ultra Soft Edge Graduated ND Filter- Filter Case