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Neewer 10100381 37mm CPL Polarizer Filter Nano Coated — main product image
Neewer 10100381 37mm CPL Polarizer Filter Nano Coated
Neewer 10100381 37mm CPL Polarizer Filter Nano Coated
Neewer 10100381 37mm CPL Polarizer Filter Nano Coated
Neewer 10100381 37mm CPL Polarizer Filter Nano Coated
Neewer 10100381 37mm CPL Polarizer Filter Nano Coated
Neewer 10100381 37mm CPL Polarizer Filter Nano Coated
Neewer

Neewer 10100381 37mm CPL Polarizer Filter Nano Coated

★★★★★4.5 (610 reviews)

Cut through glare and boost color saturation with this 30-layer nano-coated 37mm circular polarizer built on premium optical glass.

$18.99*
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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 37mm CPL Polarizer Filter is a compact yet high-performance optical accessory designed to enhance color saturation, reduce unwanted reflections, and boost contrast in your photography. At its core is a Japanese-made polarizing film capable of eliminating 99.9% of reflections from non-metallic surfaces such as water, glass, and foliage. This makes it particularly effective for landscape, nature, and outdoor photography where glare can wash out colors and reduce visual impact. The HD optical glass is finely polished for clarity, and its 30 layers of nano coating on each side work to block UV rays in the 300nm–380nm range while minimizing flare and ghosting artifacts.

Build quality is a standout feature of this filter. The frame is constructed from magnalium alloy — a lightweight yet strong aluminum-magnesium blend — measuring just 5.9mm in total thickness with a 3.5mm front bezel to avoid vignetting on wide-angle lenses. The black anodized threading is precision-machined for smooth attachment, while straight knurling along the rotation ring lets you dial in the exact polarization angle without fumbling. The multi-resistant coating adds practical resilience against water, oil, static, and surface scratches, meaning a single wipe with the included cleaning cloth restores the filter to shooting condition even in rain or dusty environments.

Key Features

【Natural Color Enhancement】 Neewer CPL Filter reduces reflections, enhances contrast, boosts saturation while retaining neutral color rendition in all your shots. Perfect for photography of all kinds, it is a must-have for capturing dramatic and breathtaking photos of the sky, clouds, water, flora, foliage, wildlife, landscape, and more

【HD Visual Experiences】 Premium optical glass is finely polished to bring you high-definition visual enjoyment. Japanese-made polarizing film eliminates 99.9% of reflection on non-metallic surfaces, and 30 layers of coatings with 0.1% minimum light reflectance on both sides of the filter can block ultraviolet rays from 300nm to 380nm to minimize flare and ghosting

【Multi-Resistant Coatings】 The multi-resistant coatings (MRC) boasts four outstanding properties—water-repellent, oleophobic, anti-static, and scratch-resistant—to make this filter easy to clean with just one wipe, smooth and will not gather dust, and able to deliver high performance even in challenging weather conditions

【Ultra-Slim Frame】 The 5.9mm ultra-slim frame is engineered with magnalium alloy to deliver extraordinary durability for years of use, and the 3.5mm front bezel effectively avoids vignettes on wide-angle lenses. Black anodized threads with advanced precision treatment enable effortless installation, and straight knurls ensure smooth rotation for achieving the best effects

【Package Contents】 1 × 37mm CPL Filter, 1 × Protective Case, 1 × Cleaning Cloth

Specifications

Brand
Neewer
Model
10100381
Filter Type
Circular Polarizer (CPL)
Diameter
37mm
Glass
HD Optical Glass
Coating
30-Layer Multi-Resistant Nano Coating
Polarizing Film
Japanese-made
Frame Material
Magnalium Alloy
Frame Thickness
5.9mm
Front Bezel
3.5mm
UV Blocking Range
300nm–380nm
Reflectance
0.1% minimum
Package Contents
1 × CPL Filter, 1 × Protective Case, 1 × Cleaning Cloth

Pros & Cons

👍 Pros

  • 30 layers of nano coating on both sides effectively reduce flare, ghosting, and UV interference from 300nm to 380nm.
  • Japanese-made polarizing film eliminates 99.9% of reflections on non-metallic surfaces for cleaner shots.
  • Ultra-slim 5.9mm magnalium alloy frame is durable while minimizing vignetting on wide-angle lenses.
  • Multi-resistant coating repels water, oil, dust, and scratches, keeping the filter clean in the field.
  • Includes a protective carrying case and cleaning cloth for safe storage and maintenance.

👎 Cons

  • 37mm thread size fits a limited number of lenses, primarily action cameras and compact setups.
  • Rotating the filter to find optimal polarization takes practice and slows down fast-paced shooting.
  • Polarizers inherently reduce light transmission by roughly 1 to 2 stops, which may require exposure compensation in low light.
  • The small 37mm diameter can make the knurled rotation ring harder to grip compared to larger filter sizes.

Frequently Asked Questions

The ultra-slim frame with a 3.5mm front bezel is designed to minimize vignetting, even on wide-angle lenses, though extreme focal lengths should always be tested.
The MRC coating is water-repellent, oleophobic, anti-static, and scratch-resistant, which means fingerprints and water droplets wipe off easily and the filter stays cleaner during outdoor shoots.
The ultra-slim 5.9mm frame design reduces the risk of vignetting when stacking, but adding multiple filters on wide-angle lenses may still introduce some edge darkening.
Rotate the outer ring of the filter using the straight knurled edge. The polarization effect changes as you turn it, with maximum effect typically at 90 degrees to the sun.

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