SKU: 22557604972

NiSi 4 x 4" Nano IRND 2.1 Filter (7 Stop)

Sale price$10887.75 Regular price$12097.50
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Description

NiSi 4 x 4" Nano IRND 2.1 Filter (7 Stop)128x Filter Factor, 7 Stop Darkens Entire Image Allows Reduced Shutter Speed Allows Wider Aperture Neutral Results, Visible, & IR Spectrums NiSi Optical Nano Coating Optical Glass Construction Leatherette Pouch The NiSi 4 x 4" Nano IRND 2. 1 Filter is an ND filter with a 128x filter factor that provides a 7 stop exposure reduction. Its 2. 1 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower

  • 128x Filter Factor, 7 Stop
  • Darkens Entire Image
  • Allows Reduced Shutter Speed
  • Allows Wider Aperture
  • Neutral Results, Visible, & IR Spectrums
  • NiSi Optical Nano Coating
  • Optical Glass Construction
  • Leatherette Pouch

The NiSi 4 x 4" Nano IRND 2.1 Filter is an ND filter with a 128x filter factor that provides a 7 stop exposure reduction. Its 2.1 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required. 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 4 x 4" Nano IRND 2.1 Filter, one layer of NiSi Optical Nano Coating is applied to each of this filter's surfaces.

This NiSi 4 x 4" Nano IRND 2.1 Filter is constructed from optical glass for clarity as well as color fidelity, and measures 4mm thick.

4 x 4" neutral density filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.
Providing a 7 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.
In the Box
NiSi 4 x 4" Nano IRND 2.1 Filter (7 Stop)
  • Filter Pouch
  • Limited 1-Year Warranty
Filter Type Solid ND Combination
Combination Type IR Attenuation
Density 2.1 (7 Stops)
Shape Rectangle
Rectangular Size 4 x 4" (101.6 x 101.6 mm)
Filter Thickness 0.16" (4 mm)
Filter Material Glass
Packaging Info
Package Weight 0.45 lb
Box Dimensions (LxWxH) 6.9 x 6.8 x 0.8"
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 22557604972

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4.4 ★★★★★
Based on 13 reviews
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A
Verified Purchase
Adam Rigdon
Fort Morgan, US
★★★★★ 5
Love them!!
Size: Queen, Number of Items: 2, Size: Queen, Number of Items: 2
Ok I normally don't leave reviews but I had to on this pillow. I was looking forever for a pillow and was nervous about buying one because you know how that usually goes when it comes to buying pillows. They arrived compressed but when you unwrap them they blow up to be a heavy duty pillow. Firm but not too firm. I don't like super soft pillows that you can roll up in a ball with one hand, I like a pillow that gives support and these do just that. They are cooling as well they are pretty for a pillow with the unique design. If you are in the market for a pillow and reading this THEN BUY THIS PILLOW & come back to tell me thank you. I promise you will NOT be disappointed. No I didn't get paid to say any of this. I wanted to give a honest review where it deserves one! You will not be disappointed! Thanks for the fast over night shipping as well. Not to mention the pricing is on point. I can say right now you will not find 2 pillows of this quality & price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
K
Verified Purchase
KEM
Lake Worth, US
★★★★★ 5
Perfect pillows
Size: Queen, Number of Items: 2
Soft, but durable. Comfortable and cool during sleep.
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Reviewed in the United States on May 17, 2026
J
Verified Purchase
James P
Boise, US
★★★★★ 4
Best pillow I’ve ever tried—hands down!
Size: Queen, Number of Items: 2
I’ve gone through a bunch of pillows over the years, but this BETU Cooling Pillow is by far the best one I’ve ever used. I sleep in literally every position—on my back, stomach, and sides—and this pillow works perfectly no matter how I’m laying. It really does have a cooling effect, which I love as a hot sleeper. Just make sure your room is cool too, and it makes a big difference. It came vacuum-packed, but it fully expanded within just a few hours. I was able to sleep on it the same day it arrived, and it was super comfy right from the start. I also washed and dried the pillowcase before using it, and it came out looking and feeling great—no shrinking or damage at all. Honestly, I look forward to going to bed every night now just because of this pillow. It’s supportive, comfortable, and totally worth it!
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Reviewed in the United States on February 21, 2026
A
Verified Purchase
Amazon Customer
Lake Worth, US
★★★★★ 5
Excellent pillows!
Size: Queen, Number of Items: 2
This pack came with 2 pillows, one firm and one that was flatter and squishy. I absolutely love the flatter one! Most comfortable pillow I've ever used! The firm one was a bit too much for me, but my husband loves it.
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Reviewed in the United States on March 28, 2026
P
Verified Purchase
Phanessa Hernandez
Lake Worth, US
★★★★★ 3
It’s alright.
Size: Queen, Number of Items: 2
Not bad pillows. They are comfortable but mine came with an odd odor, kind of mildewy smell to it. Had to spray it down to tolerate sleeping on it.
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Reviewed in the United States on May 5, 2026

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