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NiSi Circular Polarizer Specifications

  • Type

    High Definition Circular Polarizer (HD CPL)

  • Glass Thickness

    4mm / 0.16"

  • Construction

    AGC glass with Nitto polarizing film

  • Dimensions

    4 x 4" / 101.60 x 101.60mm

  • Weight

    0.22lbs / 0.10kg

  • UPC Code

    4897045106189

2 Accessories for NiSi 4x4 NiSi HD Circular Polarizing Filter

  • All Accessories (2)
  • Bags & Cases (2)

About NiSi Circular Polarizer

NiSi IR ND for Digital Cinema utilize exclusive nano dual side coating technology allowing for the best possible image when shooting raw digital cinema. The other technique lamination between two panes of glass causes color shift, higher reflection and less control of your image, unlike NiSi IR ND Filters for 6k Digital Cinema. NiSi optical glass is precision cut, coarse and precision grinding, polished and optical processed and tested to strictly control the flatness and high parallelism of the glass surface for the highest quality glass and digital cinema image. Optical Nano Coating can well control the color, density and reflection of the filters. Ultra low reflection will make sure there is no glare when shooting against the sun. The Nano Coating technology of NiSi IR ND has been innovated by NiSi Filters.

A breakthrough that will create a new era for Digital Cinema. The NiSi IR ND for Digital Cinema utilizes their exclusive nano dual side coating technology, making for pristine image quality. Other filters are produced with lamination between two panes of glass, which causes color shift, higher reflection and less image control, unlike their NiSi IR ND Filters. NiSi filters are precision cut, polished and optically processed to allow for extreme flatness and high parallelism for the highest quality glass and image quality. Optical Nano Coating allows their filters to tightly control color, density and reflection, alleviating solar glare. This technology was developed for the NiSi IR ND exclusively by NiSi Filters. This is a breakthrough in the world of Digital Cinema.

The glass is a fine annealing environmental protection optical glass H-K9L. It is specifically used for optical lenses. Double sides optical precision grinding and polishing create the highest quality filters. H-K9L is a finely annealed optical glass for environmental protection, used specifically for optical lenses. Precision grinding and polishing on each side make for the highest quality filters. NiSi IR GND utilizes exclusive optical nano gradual coating; the light from ultraviolet to near-infrared passes through very evenly, causing very minimal color cast. The NiSi IR GND utilizes their exclusive optical nano gradual coating technique; ultraviolet and near-infrared light pass through evenly, minimizing color cast.

Square polarizing filter select high quality glass material, each glass adopts optical processing technology, including coarse grinding, fine grinding and polishing. NiSi strictly control the lens surface flatness and parallelism to the ideal level, making sure the image sharpness is intact. Nitto polarizing film material can effectively eliminate reflection on the surface of non-metallic object. Square polarizing filters are made from select material utilizing coarse grinding, fine grinding and polishing. NiSi strictly controls the flatness and parallelism of each lens, keeping images razor-sharp. Nitto polarizing film material almost completely eliminates reflection from non-metallic surfaces.

NiSi Circular Polarizer Features

  • Ultra low color shifting with high quality polarizing film
  • Strict control over lens surface flatness and parallelism
  • AGC glass with optical processing technology, coarse griding, fine grinding, and polishing
  • Optimized for shooting raw 4K digital images

Key Features

  • Ultra low color shifting
  • Strict control over lens surface flatness and parallelism
  • Optimized for shooting raw 4K digital images

What's in the box:

  • Ikan 4x4 NiSi HD Circular Polarizing Filter
  • Protective 4x4 Filter Case
  • 1 Year Warranty