Neewer

Neewer NW SERIES S 40.5mm Black Diffusion 1/8 Filter

Name: Neewer NW SERIES S 40.5mm Black Diffusion 1/8 Filter
Brand: Neewer
SKU: NW SERIES S

★★★★★4.5 (190 reviews)

13in

Add a subtle cinematic glow to your footage with this ultra-slim 40.5mm black diffusion filter featuring 30-layer nano coatings.

$26.94*

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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 Neewer NW Series S 40.5mm Black Diffusion 1/8 Filter is designed to introduce a gentle halation effect around highlights, softening skin texture and lending footage a warm, filmic quality without heavy post-processing. Built from Japanese AGC HD optical glass with 92% light transmission, the filter maintains image clarity while the embedded black diffusion particles scatter a controlled amount of light. The 1/8 designation indicates the mildest level of diffusion in the series, making it a practical choice for creators who want a consistently polished look across interviews, vlogs, and portrait sessions without drawing attention to the effect itself.

Construction details set this filter apart from basic budget options. The CNC-machined aluminum frame measures just 3.3mm thick, which helps prevent vignetting even on moderately wide-angle lenses. A trapezoidal knurling pattern on the frame edge provides a secure grip when threading the filter on or off. Both sides of the glass feature 30 layers of nano coating that repel water, oil, and fingerprints, reducing flare caused by the filter surface itself and making field cleaning straightforward. For the price, it delivers a meaningful upgrade to footage aesthetics for shooters using cameras with 40.5mm lens threads.

Key Features

【Black Diffusion Camera Lens Filter】NEEWER 40.5mm black diffusion 1/8 filter with dreamy cinematic effect helps reduce highlights and lower the glare, making the skin look smoother and gives the tone a hazier and softer look. The hazy film effect can be better realized, showing a dreamy film effect. Ideal for portrait photography, video recording, and vlog videos.

【HD Optical Glass】Black diffuse soft light filter with a unique multi layer anti reflection coating to reduce reflections from the ground and the filter itself. Made of Japanese AGC HD optical glass with 92% light transmission and a high definition quality. It softens wrinkles and pores in human skin and provides a practical and increased halo that adds a pleasingly warm depth to the image for a subtle and hazy cinematic effect.

【Multi Layers Nano Coatings】The 30 layers of nano coatings on both sides of the filter are waterproof & scratch resistant, and oil proof, effectively reducing the reflection came from the filter itself and the ground.

【CNC Non Slip & Ultra Slim Frame】This black diffusion 1/8 filter ultra slim frame with CNC trapezoidal pattern frame features only 0.13in/3.3mm and avoids vignetting and dark corners on wide angle and telephoto lenses; CNC non slip design frame is easy to install and remove.

【Please Note】This black diffusion soft 1/8 filter is compatible with all 40.5mm lenses. Please verify your camera's lens thread size before ordering. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap. This number is always preceded by a "ø" (diameter) symbol.

Specifications

Filter Size

40.5mm

Effect

Black Diffusion 1/8

Optical Glass

Japanese AGC HD Optical Glass

Light Transmission

92%

Coatings

30 Layers Nano Coatings (Waterproof, Scratch Resistant, Oil Proof)

Frame Material

CNC Machined Aluminum

Frame Thickness

0.13in / 3.3mm

Frame Design

Ultra Slim, Non-Slip Trapezoidal Pattern

Brand

Neewer

Model

NW Series S

Pros & Cons

👍 Pros

Ultra-slim 3.3mm frame reduces the chance of vignetting on wide-angle lenses
30-layer nano coating resists water, oil, and scratches for easier maintenance
Japanese AGC optical glass maintains 92% light transmission for minimal exposure loss
CNC trapezoidal frame pattern provides a secure non-slip grip for quick installation and removal
Subtle 1/8 diffusion strength is versatile enough for everyday portrait and video work

👎 Cons

Only available in 40.5mm thread size, limiting compatibility to smaller-diameter lenses
The 1/8 diffusion effect may be too subtle for users wanting a more pronounced cinematic look
No included carrying case or pouch to protect the filter during transport
Budget glass may not match the optical consistency of higher-end diffusion filters from Tiffen or NiSi

Frequently Asked Questions

How strong is the diffusion effect on the 1/8 strength filter?

The 1/8 strength is the subtlest option in the black diffusion range. It softens highlights and skin texture slightly without making the image look noticeably blurry, making it suitable for everyday shooting where you want a hint of cinematic character.

Will this filter cause vignetting on wide-angle lenses?

The ultra-slim frame is only 3.3mm thick, which is designed to minimize vignetting on both wide-angle and telephoto lenses. However, on extremely wide focal lengths, some minor corner darkening is possible.

Can I stack this filter with other 40.5mm filters like a UV or polarizer?

Yes, the slim frame allows stacking, though adding multiple filters increases the risk of vignetting on wider lenses. The filter uses standard 40.5mm threading on both sides.

Is the filter easy to clean given the nano coatings?

Yes. The 30-layer nano coating is water-repellent, scratch-resistant, and oil-proof, so fingerprints and smudges wipe off more easily than on uncoated glass.