Superior to Lee Big stopper.
- Can be used for Canon 16-35,Canon 24-70,Nikon 24-70,NiKon 70-200 and other 52mm,55mm,58mm,62mm,67mm,72mm,77mm,82mm lens,compatible with Lee Cokin Hitech Singh-Ray and other brand holder
- NiSi ND filter selects high quality neutral density glass and with precision polishing on both sides to make sure there is low color shift and high definition. The color of Resin material ND filter is easy to fade and there will be color shift. Moreover, resin material ND filter can’t reach HD standard.
- The raw material of NiSi ND filter has been through a lot of tests. Firstly we will test the spectrum of each batch of material with Japan Shimadzu Spectrometer UV-2600.and we will shoot pictures using the samples. After being sure there is no color shift, Then we will make mass production.Moreover, we will test if the glass is HD or not with large-dimension substrate identification test equipment from Military Optical Instrument Company.
- Nano attenuation coating,Water&oil repellent coating,Ultra low color shift,Ultra low reflection
- For NiSi square ND filters , there are not only AR coating on the surface. We also added the anti-leaking sponge which is made from Japan fire-proof foam.The frame of NISI round ND filters is ultra slim which is only 3.5mm thickness. There will be without vignetting when shooting with the wide angle lens.