This 6.6 x 6.6" NiSi Nano IRND Filter 6.6x6.6 6-Stopis an ND filter with a 64x filter factor that provides a 6-stop exposure reduction. Its 1.8 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed without overxposing your image. By slowing your exposure time or increasing your aperture, you are able to control depth of field and convey movement more easily. Neutral density filters are intended to not affect the coloration of the image and are ideal for pairing with other filters.

The design of this filter has been optimized for use with digital sensors and to promote nearly flat attenuation of visible and infrared light. Due to imaging sensors' greater susceptibility to infrared light, compared to traditional film, color casts can occur when photographing darker subjects that require increased exposure times. To provide a high level of neutrality across the visible and infrared spectrums in order to eliminate color casts and ensure cleaner, truer blacks when using the NiSi 6.6 x 6.6" Nano IRND 1.8 Filter, one layer of NiSi Optical Nano Coating is applied to each of this filter's surfaces.

This NiSi 6.6 x 6.6" Nano IRND 1.8 Filter is constructed from optical glass for clarity as well as color fidelity, and measures 4mm thick.

1.8 Optical Density    NiSi Optical Nano Coating    Optical Glass Construction    Darkens Entire Image    Allows Reduced Shutter Speed    Allows Wider Aperture    Neutral Results, Visible, & IR Spectrums    Includes Leatherette Pouch

6.6 x 6.6" neutral density filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 6-stop exposure reduction, this filter allows you to control depth of field and convey movement more easily.

Filter does not affect coloration of the image and is ideal for use with other filters.

Each surface includes one layer of NiSi Optical Nano Coating that attenuates infrared light as well as visible wavelengths, to maintain color neutrality and suppress color casts due to increased exposure times.

Constructed from optical glass for clarity.

Leatherette pouch included for storage and transport.

Related Questions and Answers

Q: 1. How we can get these products in Nepal? Regarding diameter of lens it's 77mm which one ND will fit on it?

A: Please enter your shipping address for duties and taxes. You can use ND filters that have a 77mm filter thread.

Q: 2. Schneider sells IR cut filters rated for 750nm and 680nm respectively. Do we know at what infrared wavelength this filter begins to cut light?

A: This filter does not cut light at specific nm, but cots down the light by 6 stops compared to what is available at the time of shooting.

Q: 3. What is the difference between this and the Nisi 4x4? (I read one is 2mm and the other is 4mm) what difference does that make?

A: 2mm filters are primarily used in slide-in filter holders, whereas 4mm filters would not fit them and are primarily used in matte boxes.

Q: 4. 4mm glass is for Nisi V5 system?

A: Nisi V5 uses 100x100mm by 2mm thick filters.

Q: 5. Will this fit a Lee Filter holder?

A: Yes.

Q: 6. I need an additional adapter glass to use an additional 4x4 ND filter in my v5 filter box. Does this come with the adapter glass? If not, how can I get one?

A: This will work in a Nisi V5 without an adapter.

Q: 7. is there a particular reason Nisi makes this density in 100x100mm and not 4x4? I need 8 stop ND to complement my Nisi IRND set

A: You can use 100x100 filters. 100x100 is the same as a 4x4 filter.

Q: 8. Does this have the scratch resistant coating which was demonstrated at NAB 2016?

A: Scott, these particular NiSi filters do have a scratch resistant coating, BUT, it is not the same as what was demonstrated during NAB 2016. NiSi has a new line of filters with a very strong scratch-resistant coating coming out later this year. That is what was being demonstrated at NAB 2016.

Q: 9. Is the gasket pre-installed?

A: Yes, the gasket is attached to the filter.

Q: 10. Does this fits Tilta 4 x 5.65" Stackable Filter Tray Holder (BH #TIMBT16SFH)?

A: According to Tilta, the Mirage-system supports 2mm and 4mm filters like this Nano IRND 2.1 filter. The issue with your question, however, is that the stackable filter tray holder is not the device you need to hold the filter. You need TIMBT16SFT (stackable filter tray) AND TIMBT16SFH (stackable filter tray HOLDER) to work with the Mirage matte box.