NiSi Reverse GND 0.9 100*150mm Square Optical Glass Filter Graduated ND Filter. NiSi's filter glasses are manufactured by two most famous optical glass suppliers in the world - Schott (Germany).
Key Features :
High quality environmental optical glass for increased optical clarity and color fidelity
Eliminates overly bright, washed-out images
Precise grinding and polishing on both sides
Multi-layer coating on both sides reduce reflection and "ghost images"
Water & oil repellent, scratch & stain resistant
Gradual light reduction from 0 to ND 0.9 = ND8