
NiSi
NiSi Soft IR GND(32) 1.5 100x150 Graduated Filter
★★★★★
100x150
A 5-stop soft graduated ND filter on premium optical glass for smoothly balancing bright skies and dark foregrounds.
$216.72*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.
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Overview
Key Features
2mm H-K9L High Definition Optical Glass
Double Sided Anti-glare Coating
Waterproof and Oil Resistant Nano Coating
Ultra Low Color Cast
Can be used in any 2mm filter system
Specifications
Filter Type
Soft Graduated Neutral Density
Density
1.5 (GND32, 5-stop)
Size
100x150mm
Glass
2mm H-K9L High Definition Optical Glass
Coating
Double-sided Anti-Glare
Pros & Cons
👍 Pros
- 5-stop reduction is strong enough to handle high-contrast scenes like sunrises and sunsets
- Soft graduation provides a natural-looking transition that works well with uneven or irregular horizons
- Made from 2mm H-K9L high-definition optical glass for excellent clarity and minimal distortion
- Double-sided anti-glare coating reduces flare and maintains color accuracy
- 100x150mm rectangular format allows vertical adjustment within the holder for precise positioning
👎 Cons
- 5-stop density may be too strong for mildly bright skies, requiring a lighter GND filter as well
- Rectangular glass filters are more fragile and require careful handling compared to screw-on filters
- Requires a separate 100mm filter holder system to use, adding to overall cost
- The soft graduation may not provide enough contrast control for scenes with a perfectly flat, sharp horizon
- At 2mm thickness, it may add slight vignetting when stacked with multiple filters on ultra-wide lenses
Frequently Asked Questions
What does the 1.5 density (GND32) rating mean on this filter?
A 1.5 density equals a 5-stop light reduction on the graduated side, which is strong enough to tame very bright skies while leaving the foreground unaffected.
What is the difference between a soft and hard graduated ND filter?
This soft GND filter has a gradual, feathered transition between the dark and clear areas, making it ideal for uneven horizons like mountains or cityscapes. A hard GND has an abrupt transition better suited for flat, clean horizons.
What filter holder system does this 100x150mm filter fit?
This filter is designed for standard 100mm filter holder systems, such as NiSi's own V5, V6, or V7 holders, as well as compatible third-party 100mm holders.
Does the IR coating on this filter affect color accuracy?
The double-sided anti-glare coating on the H-K9L glass helps maintain color neutrality and reduces infrared contamination, which can cause unwanted color casts in long exposures.
Can I stack this filter with other 100mm filters?
Yes, most 100mm holder systems support stacking multiple filters, though stacking may increase the risk of vignetting on wide-angle lenses.