Nisi’s Nano coating optical gradient filter. It’s made from environmental optical glass (H-K9L). The glass is find annealing environmental protection optical glass H-K9L. Double sides optical grinding and polishing to make sure the optical high parallelism and smooth which ensure the high sharpness of the image. Neutral density filter coated on double sides via 0° C high-temperature coating. The spectrum curves and straight and flat. It’s soft transition from visible light to infared light. There is anti-electrostatic coating on double sides make the filter won’t fade after several years.
Made from ultra stable H-K9L environmental optical glass;
Double-sides special optical nano multi-coating to improve image quality;
Double-sides elegant grinding and polishing to ensure the high sharpness of image;
Lens surface double sides super waterproof, oil resistant, easy to clean;
High-quality lenses for enhanced treatment, scratch-resistant, durable for long life use;
Smooth transition of gradient process, even color;
Reduce light 4 degrees, ultra micro color cast;
Superior-quality aerospace aluminum frame design.
1x NiSi Pro Nano GND Filter