NiSi 100 x 150mm Nano Hard-Edge Reverse-Graduated IRND 0.9 to 0.15 Filter (3 to 0.5-Stop)
SKU: 89440503234

NiSi 100 x 150mm Nano Hard-Edge Reverse-Graduated IRND 0.9 to 0.15 Filter (3 to 0.5-Stop)

Sale price$8919.00 Regular price$9910.00
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Description

NiSi 100 x 150mm Nano Hard-Edge Reverse-Graduated IRND 0.9 to 0.15 Filter (3 to 0.5-Stop)8x to 1. 4x Filter Factor, 3 to 0. 5 Stop Reduce Exposure for Sunrises or Sunsets Increases to Maximum Density at Center Effect Configured for Sun at Horizon Hard Edged Line of Transition NiSi Optical Nano Coating Neutral Results, Visible, & IR Spectrums Optical Glass Construction 2mm Thick Leatherette Pouch This Nano Hard Edge Reverse Graduated IRND 0. 9 to 0. 15 Filter from NiSi is compatible with filter holders that can accommodate 2mm thick, 100 x

  • 8x to 1.4x Filter Factor, 3 to 0.5-Stop
  • Reduce Exposure for Sunrises or Sunsets
  • Increases to Maximum Density at Center
  • Effect Configured for Sun at Horizon
  • Hard-Edged Line of Transition
  • NiSi Optical Nano Coating
  • Neutral Results, Visible, & IR Spectrums
  • Optical Glass Construction
  • 2mm Thick
  • Leatherette Pouch

This Nano Hard-Edge Reverse-Graduated IRND 0.9 to 0.15 Filter from NiSi is compatible with filter holders that can accommodate 2mm-thick, 100 x 150mm rectangular filters. It can be applied to darken bright skies, specifically during a sunrise or sunset, while allowing for a normal, unaffected exposure in the other regions of the image.

This filter achieves its effect with a 0.9 band of density across its center region that provides a 3-stop reduction in light from entering a lens. This band extends approximately 4mm in both vertical directions which tapers to a 0.15 density that provides a 0.5-stop reduction in light at the edge above it. Directly below the 0.9 band of density, it tapers to clear, with a hard-edged line of transition before the clear area.

The placement of a 0.9 band of density that tapers to a density of 0.15 above it with a clear area directly below, allows the NiSi 100 x 150mm Nano Reverse-Graduated IRND 0.9 to 0.15 Filter to match the positioning of the sun when it is at, or immediately above the horizon. In such instances, the sun can appear closer to the center of an image as opposed to the upper edge, and an increase in brightness is created that is more prominent on both sides of the sun than above it. This pattern of brightness corresponds to the density pattern on the NiSi 100 x 150mm Nano Hard-Edge Reverse-Graduated IRND 0.9 to 0.15 Filter. The hard-edged line of transition in this reverse, graduated neutral density filter is useful for hard transitions between the sky and land, while the 3-stop to 0.5-stop gradation is applicable to multiple regions of brightness within the sky.

  • Compatible with filter holders that can accommodate 2mm-thick, 100 x 150mm rectangular filters
  • Effectively darkens bright skies, specifically during a sunrise or sunset, while allowing for a normal, unaffected exposure in the other regions of the image
  • 3-stop band of density that tapers to a 0.5-stop density at the edge above it while directly above a clear area creates a neutral density pattern that matches the positioning of the sun when it is at, or immediately above the horizon
  • 3-stop band of density extends approximately 4mm in both vertical directions
  • Density pattern corresponds to the brightness pattern of the sun when it appears at or is closer to the horizon as opposed to a higher angle, which creates an increase in brightness that is more prominent on both sides of the sun than above it
  • Hard-edged line of transition between the 3-stop band of density and the clear area below it is useful for hard transitions between the sky and land
  • 3-stop to 0.5-stop gradation is applicable to multiple regions of brightness within the sky
  • Filter does not affect the overall coloration of the image
  • 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
  • Nano coating provides an improved beading effect with water or oil for more efficient cleaning
  • Constructed from optical glass for clarity
  • Leatherette pouch included for storage and transport
In the Box
NiSi 100 x 150mm Nano Hard-Edge Reverse-Graduated IRND 0.9 to 0.15 Filter (3 to 0.5-Stop)
  • Filter Pouch
  • Limited 1-Year Warranty
Type Reverse-graduated neutral density
Edge Blending Hard
Size 3.9 x 5.9" (100.0 x 150.0 mm)
Thickness 0.1" (2.0 mm)
Density 0.9 to 0.15
Filter Factor 8 (3 stop) to 1.4 (0.5 stop)
Effect Reduces exposure in select areas of an image and helps to attenuate IR contamination
Construction H-K9L optical glass
Packaging Info
Package Weight 0.7 lb
Box Dimensions (LxWxH) 8.6 x 6.7 x 0.9"
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: 89440503234

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Amazon Customer
Pawtucket, US
★★★★★ 4
Ehh
Color: Black, Color: Black
Eh. I mean, it was warm… but it trapped moisture from me breathing into it, so then it was like wet… which wasn’t ideal. Didn’t stay up on my nose super well. I had to tuck it into my goggles. Easy to wash. Decently soft. Feel like it wasn’t exactly worth the money I spent, but I know it is real wool, so that comes with a price tag. I don’t know…I really didn’t like the water / moisture getting trapped around my mouth and chin and what not. Just causing skin breakout issues. Helped cut the cold wind, but I feel like it could be better, or like there are better options out there maybe. Maybe not meant for snowboarding or exercising, so you’re not breathing as hard into it. Maybe it’s just meant for walking around with it around your neck. I don’t know.
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Reviewed in the United States on May 27, 2026
M
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michael kincaid
Battle Creek, US
★★★★★ 5
Not very itchy, easy to put in your pocket and warm
Color: Black
I wore turtle fur for a long time and liked it except that it's too big to fit in my pocket. This wool product has really impressed me so far. It doesn't have a zero itch rating but it is very soft. It's surprisingly warm for its weight. Fits easily in my coat pockets. It's comfortable, fits well on both my neck and face as it has some stretch to it. It had a smell when I first opened the package but that went away after a couple of days. I wore it around my neck in 20F and was warm. I would say that using it as a face mask at that temperature would be pushing its limits. I find it to be a good balance between size and warmth for the Kentucky tri-state area in a mild winter. Because of it's size you can easily put a layer over it during extreme cold and it would be well worth the space it takes in your pocket
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Reviewed in the United States on February 12, 2024
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Samuel
Louisville, US
★★★★★ 5
Robbery
Color: Black
Very warm and light
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Reviewed in the United States on February 8, 2026
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David George
Birmingham, US
★★★★★ 3
Too Short
Color: Burgundy
I like the material and construction; it's soft and thick. It is warm and is effective at temperatures in the teens and winds around 30 mph. The thickness of the material helps prevent my breath from instantly condensing and moistening the fabric. I never got the "wet dog" smell wet wool is known for. Its fit is a little tight but not prohibitively so. The color matches that of the beanie. It's too sort to be considered versatile. In wind I had to choose between shielding my neck or my face. I HIGHLY recommend you not machine wash and dry. Hand wash it and let it dry naturally.
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Reviewed in the United States on February 27, 2026
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Jake
Carnegie, US
★★★★★ 4
Nice for the money
Color: Army Green
Nice but not the most comfortable and came with an interesting smell. I with it was a bit thicker but the build quality is nice and it does look nice. For the price, I'd buy again. I use it primarily for skiing.
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Reviewed in the United States on April 14, 2025

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