NiSi NISI-P1-ND0.9 P1 ND8 Neutral Density Filter Mobile — main product image

NiSi NISI-P1-ND0.9 P1 ND8 Neutral Density Filter Mobile

NiSi

NiSi NISI-P1-ND0.9 P1 ND8 Neutral Density Filter Mobile

Name: NiSi NISI-P1-ND0.9 P1 ND8 Neutral Density Filter Mobile
Brand: NiSi
SKU: NISI-P1-ND0.9

Three stops of light reduction let you shoot silky long-exposure water and motion blur on your smartphone without overexposing in bright conditions.

$21.99*

✓ In Stock on Amazon.com

View on Amazon

*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The NiSi NISI-P1-ND0.9 is a 3-stop (ND8) neutral density filter sized and engineered for the NiSi P1, P2, and P49 mobile and compact camera filter systems. The optical density of 0.9 — the "ND0.9" in the model number — translates directly to 3 stops of light reduction, which is the most versatile ND density for daylight creative work: enough to shoot waterfalls with 1-second exposures at midday, blur pedestrian movement at busy intersections, or maintain wide-aperture portrait exposures in direct sun without blowing the highlights. The infrared protection coating is NiSi's answer to the color neutrality problem that plagues lower-cost ND glass — by blocking infrared wavelengths that don't contribute to visible image formation, the filter avoids the warm or reddish color shift that makes cheaper ND filters require manual white balance correction.

This filter is designed for mobile photographers and compact camera users who want to access the same long-exposure creative techniques that ND filters have enabled for DSLR and mirrorless shooters for decades. The high-definition optical glass and NiSi Nano Coating bring production-level optics to the small-format filter market: sharpness is maintained through the filter surface, and the waterproof, scratch-resistant nano coating means the filter can be wiped clean in seconds between shots without babying it. For NiSi P1 system owners, the ND8 fills the gap between the system's CPL and higher-density ND options, rounding out a capable filter kit for outdoor and travel photography on a smartphone or compact body.

Key Features

Designed to be used with the P1 Filter System (P1, P2, and P49 filter holders) for compact cameras and mobile phones

Provides a 3 stop reduction of light entering the lens, while still providing true to life color

Lengthen the shutter speed by reducing the amount of light entering the camera, giving a more natural sense of motion

Infrared protection and low-reflection to ensure natural color

High definition optical glass with NiSi Nano Coating - waterproof, scratch resistant, and easy to clean

Specifications

Brand

NiSi

Model

NISI-P1-ND0.9

Filter Type

Neutral Density (ND8)

Optical Density

0.9

Light Reduction

3 stops

Compatible Systems

NiSi P1, P2, P49 filter holders

Glass Type

High definition optical glass

Coating

NiSi Nano Coating (waterproof, scratch resistant)

IR Protection

Yes (infrared cut)

Compatible Devices

Mobile phones, compact cameras

Pros & Cons

👍 Pros

3-stop light reduction opens up long-exposure techniques in full daylight — smooth water, motion blur, and wide-aperture shooting that would otherwise overexpose
Infrared-cut coating prevents the warm color shift that uncoated ND filters introduce, keeping white balance accurate without post-correction
NiSi Nano Coating makes the optical glass surface waterproof and fingerprint-resistant — practical for outdoor shooting in humid or drizzly conditions
High-definition optical glass maintains image clarity and sharpness through the filter, unlike cheaper resin alternatives that soften fine detail
Compatible with the P1/P2/P49 system's stacking capability — pair with a CPL or additional ND for combined creative effects in a single holder pass

👎 Cons

Requires a NiSi P1, P2, or P49 filter holder — this filter cannot be used without the corresponding holder system, which is sold separately
3 stops of reduction covers a specific exposure range — for extreme long exposures in bright sun, a 6-stop or 10-stop ND is needed, which NiSi sells separately
The P1 system is designed for mobile phones and compact cameras only — this filter is not compatible with DSLR or mirrorless lens filter threads
Holder-based filter systems add setup and removal time compared to a simple screw-on filter — fast-changing shooting situations may not allow time for filter attachment
Small physical format means more handling per filter change, increasing the risk of fingerprint contamination on the optical surface during field use

Frequently Asked Questions

What exactly does "3-stop reduction" mean for my smartphone exposure settings?

A 3-stop ND filter reduces the light entering the lens by a factor of 8 (2³). In practice, if your scene requires 1/500s without the filter, you can now expose at 1/60s — or if shooting at a fixed shutter, you can open the aperture three stops wider. This is the range that smooths moving water, blurs pedestrian crowds, and creates streaking car light trails in daylight.

Does this ND8 filter alter the color rendition of my shots?

The NiSi P1 ND8 is designed for color neutrality — infrared protection and low-reflection coatings are specifically engineered to prevent the warm or magenta color cast that cheaper ND filters introduce. Real-world color deviation on NiSi filters in this class is minimal and within correction range in post.

Which filter holders is this filter compatible with?

This filter is designed for use with the NiSi P1, P2, and P49 filter holder systems. It is not a standalone screw-on filter — it requires the appropriate NiSi P-series holder for your phone model or compact camera. Confirm your holder compatibility before purchasing this filter separately.

Is the nano coating on this filter durable enough for field use?

The NiSi Nano Coating is rated waterproof and scratch resistant. It also simplifies field cleaning — oils and dust release easily with a lens cloth rather than requiring chemical cleaners. The high-definition optical glass substrate provides the structural durability; the nano coating handles surface contamination management.

Can this filter be stacked with other NiSi P1 filters for greater light reduction?

Yes — the P1 filter system is designed to stack compatible filters in the holder. A P1 CPL combined with this ND8 gives you polarization plus 3-stop reduction simultaneously. NiSi provides stacking guidance for their P-series holder to avoid vignetting at the filter stack edges.