NiSi 42251 62mm Pro Nano HUC UV Protection Filter — main product image

NiSi 42251 62mm Pro Nano HUC UV Protection Filter

NiSi

NiSi 42251 62mm Pro Nano HUC UV Protection Filter

Name: NiSi 42251 62mm Pro Nano HUC UV Protection Filter
Brand: NiSi
SKU: 42251

★★★★★5.0 (2 reviews)

Crystal-clear lens protection with 99.2% light transmission and a precision brass frame that stays out of your images.

$56.00*

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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

The NiSi 62mm Pro Nano HUC UV filter is built for photographers who want permanent lens protection without optical compromise. The clear optical glass delivers 99.2% light transmittance — effectively invisible to your sensor — while the HUC (High Utilization Coating) and proprietary "U" type nano coating work in tandem to reject reflections, repel moisture, and resist scratches. This means clean, contrast-rich images even when shooting into challenging light, and a front element that stays clear through rain, sea spray, and dusty trail conditions. The brass frame is CNC-milled for precise thread engagement with your lens, and its knurled edge provides tactile grip for installation and removal in the field.

This filter earns its place on lenses you take into unpredictable environments — landscape work, travel photography, street shooting in weather. The 62mm size fits popular mid-range zooms and prime lenses from multiple systems, and the ultra-thin frame design keeps corner shading at bay for all but the widest focal lengths. For photographers who leave a UV filter permanently mounted as a protective barrier against dust, moisture, and accidental contact, the NiSi Pro Nano HUC justifies its price through optical transparency that cheaper alternatives cannot match. It's the kind of filter you mount once and forget about — which is exactly what good protection should be.

Key Features

Ultraviolet absorption optical glass with a high transmittance of 99.2%

Brass frame constructed with highly accurate brass milling

Exclusive creative "U" type Nano coating - waterproof, anti-reflection, scratch resistant, and easy to clean

Super High Definition

Ultra thin brass frame to minimize vignetting and knurled edges for easy instillation

Specifications

Brand

NiSi

Model

42251

Filter Size

62mm

Filter Type

UV Protection

Glass Material

Clear UV Absorption Optical Glass

Frame Material

Precision-Milled Brass

Coating

Nano HUC — Waterproof, Anti-Reflection, Scratch-Resistant

Light Transmittance

99.2%

Frame Design

Ultra-Thin with Knurled Edges

Pros & Cons

👍 Pros

99.2% light transmittance means virtually zero exposure loss or image degradation when shooting through this filter
Precision-milled brass frame resists cross-threading and provides a more durable, corrosion-resistant mount than aluminum alternatives
Hydrophobic nano coating repels water, oil, and dust, keeping the glass clean during challenging outdoor shooting conditions
Ultra-thin frame profile minimizes vignetting risk on standard and moderate wide-angle lenses at 62mm
Scratch-resistant coating protects the filter surface itself, extending its useful life through repeated field use and cleaning

👎 Cons

62mm thread size limits this specific filter to lenses with that exact filter diameter — no adapter system included
The ultra-thin frame, while reducing vignetting, offers a shallow grip surface that can be tricky to remove with cold or wet fingers
Brass construction adds slight weight compared to aluminum-framed filters, which is noticeable when stacking multiple filters
At this price tier, you're paying a premium over basic UV filters — the optical benefit is marginal if lens protection is your only goal
No included case or pouch for storage, increasing the risk of coating damage when tossed loose in a gear bag

Frequently Asked Questions

Will this filter introduce any color cast or softness to my images?

At 99.2% transmittance with HUC nano coating, this filter is effectively optically neutral. In controlled tests, UV filters in this class show no measurable resolution loss or color shift on modern digital sensors — your images will look identical with or without it mounted.

Is the brass frame prone to cross-threading or jamming on aluminum lens threads?

Brass is softer and more forgiving than aluminum against aluminum lens threads, which actually reduces the risk of cross-threading and seizing compared to aluminum-framed filters. The knurled edges provide a secure grip for installation and removal.

How does the nano coating perform when shooting in rain or near water?

The "U" type nano coating is hydrophobic — water beads and rolls off the glass surface rather than sheeting. This also means fingerprints, oil, and dust wipe away with minimal effort, keeping the filter clean during outdoor shoots without aggressive cleaning.

Will this 62mm filter cause vignetting on wide-angle lenses?

NiSi designed this with an ultra-thin brass frame specifically to minimize vignetting. On most 62mm-threaded lenses, you won't see corner darkening. However, on ultra-wide lenses (roughly 18mm equivalent or wider on APS-C), it's worth testing for vignetting at the widest focal length.

Can I stack other filters on top of this UV filter?

Yes, the front of the frame is threaded for stacking. Keep in mind that adding a second filter on top of the already-thin frame increases the total profile, which raises vignetting risk on wider focal lengths.