67mm Nisi Pro Graduated 4-Stop Neutral Density Lens Filter Nano Multi-Coated ND
Please refer to product description.
Nisi’s GND16 nano coated optical graduated filter employs the newest processing technique of digital lenses with a well-proportioned transition in the graduated filtration area. It is made from environmental optical glass with double sided optical grinding and polishing, producing optically high parallelism and smoothness for overall high image sharpness. The transition from the unfiltered part of the image to the filtered part of the image is softly graduated and consistent, following a transmission curve that is straight and flat.
The anti-electrostatic coating on both sides of the glass ensures that the filter does not fade after several years. The ultra-thin high quality aluminum frame is manufactured with superfine dull polishing and elaborate knurling so that the filter will not blanch over time because of repeated rotation. The ultra-thin 7mm thickness also helps to avoid vignetting when using wide angle lenses.
1. Ultra-Thin Frame Design
2. Nano Coating
3. Optical Glass (H-K9L)
4. Low Color Cast
5. Ultra Low Reflection
6. High Definition