Neewer NW SERIES S 40.5mm Variable ND Filter — main product image

Neewer NW SERIES S 40.5mm Variable ND Filter

Neewer

Neewer NW SERIES S 40.5mm Variable ND Filter

Name: Neewer NW SERIES S 40.5mm Variable ND Filter
Brand: Neewer
SKU: NW SERIES S

★★★★★4.5 (274 reviews)

Smoothly control 1 to 5 stops of light reduction with 30-layer nano-coated Japanese optical glass in an ultra-slim frame.

$36.99*

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*Price sourced from Amazon.com. Last updated:Jul 15, 2026.Price and availability are subject to change.

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Overview

The Neewer NW Series S 40.5mm Variable ND Filter gives photographers and videographers smooth, stepless control over light transmission from ND2 through ND32 — a range of 1 to 5 stops. This is particularly useful for shooting long-exposure water, light trails, or maintaining wide apertures in bright conditions for shallow depth of field. The filter uses premium Japanese AGC optical glass with 30 layers of double-sided nano coating, achieving a minimum light reflectivity of 0.1% to keep flare and ghosting under control while maintaining image sharpness and color fidelity.

Build quality is a standout feature at this price tier. The aircraft-grade aluminum frame is CNC-machined with a black matte finish that resists cross-threading and jamming — a common issue with cheaper variable ND filters. At just 7.4mm thick (excluding thread), the slim profile is designed to avoid vignetting when paired with wide-angle lenses. Marked positions on the rotating ring let you set a repeatable ND stop without guesswork, and the included protective case and cleaning cloth keep the glass in good condition between shoots.

Key Features

【Variable ND2-ND32 Camera Lens Filters】 This 40.5mm variable camera lens filter features 5 stops of exposure brightness, from ND2, ND4, ND8, ND16 to ND32 (the numbers represent how much light enters the lens in terms of a fraction). Use this filter to gain more control over exposure and shutter speed when shooting rivers, waterfalls, light trails, etc

【No X cross dark spot】 With markers on the frame, rotate the filter to accurately adjust ND stop with ease. When mounted on wide angle lens, no need to worry about X cross dark spot. A 43mm lens cap is required to fit on the 40.5mm filter

【Multi Layer Nano Coated HD Optical Glass】 Made of premium Japanese AGC optical glass, the high definition ND filter delivers cinematic photo look without distorting image quality. The 30 layers of double sided Nano coatings, with 0.1% minimum light reflectivity, reduce flare and ghosting while protecting the filter against moisture, oil, dust, and scratches

【Professional Build】 The aircraft grade aluminum frame makes the filter lightweight. 0.37"/9.5mm thick (including thread, 0.29"/7.4mm thick excluding thread), this ultra slim filter helps avoid vignetting. Finished in black matte and CNC precisely machined, it is durable and has zero chance of being jammed on lens

【About its Compatibility】 This 40.5mm ND filter can only fit 40.5mm camera lens. Please confirm the filter thread size marked on your camera with the "Ф" (diameter) symbol before ordering. When mounted on camera, the ND filter also protects your camera lens from scratches. Protective case and cleaning cloth also included

Specifications

Brand

Neewer

Model

NW Series S

Filter Type

Variable ND

ND Range

ND2–ND32 (1–5 Stops)

Thread Size

40.5mm

Glass

Japanese AGC Optical Glass

Coating

30-Layer Double-Sided Nano Coating

Light Reflectivity

0.1% Minimum

Frame Material

Aircraft-Grade Aluminum (CNC Machined)

Frame Finish

Black Matte

Thickness (with thread)

9.5mm / 0.37"

Thickness (without thread)

7.4mm / 0.29"

Required Lens Cap Size

43mm

Included Accessories

Protective Case, Cleaning Cloth

Pros & Cons

👍 Pros

30-layer double-sided nano coating reduces flare and ghosting while repelling moisture, oil, and dust
Variable ND2-ND32 range allows quick adjustment across 5 stops without swapping filters
Ultra-slim 7.4mm profile minimizes vignetting on wide-angle lenses
Aircraft-grade aluminum frame is lightweight yet resistant to jamming on the lens thread
Marked frame positions make it easy to dial in a specific ND stop accurately

👎 Cons

40.5mm thread size fits only a limited number of lenses — verify your lens diameter before purchasing
Maximum ND32 (5-stop) limit may not be sufficient for very bright conditions or extremely long exposures
Requires a 43mm lens cap rather than the standard 40.5mm cap when mounted
Variable ND filters inherently introduce slight color shifts at higher density settings

Frequently Asked Questions

What ND range does this filter cover?

It provides variable neutral density from ND2 to ND32, which translates to 1 through 5 stops of light reduction. You rotate the outer ring to adjust anywhere within that range.

Will this filter cause an X-pattern cross artifact on wide-angle lenses?

Neewer states this filter is designed to avoid X-cross dark spots, even when used on wide-angle lenses, thanks to its calibrated polarizer alignment.

What lens cap size do I need when this filter is mounted?

You will need a 43mm lens cap to fit over the 40.5mm filter, since the filter's front ring is slightly larger than the thread size.

How thick is the filter, and will it cause vignetting?

The filter is 9.5mm thick including the thread (7.4mm excluding thread). This ultra-slim profile is designed to minimize vignetting, even on wider focal lengths.

What is included with the filter?

The filter comes with a protective carrying case and a cleaning cloth.