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Sigma AFL-950 46mm EX DG Circular Polarizer Filter — main product image
Sigma

Sigma AFL-950 46mm EX DG Circular Polarizer Filter

★★★★★4.2 (166 reviews)

Enhance Your Images with Clarity and Color The Sigma AFL-950 46mm EX DG Circular Polarizer Filter is designed to minimize glare and reflections from non-metallic surfaces, resulting in more vibrant and saturated colors in your photographs. This filter is multi-coated to reduce ghosting and reflec...

$151.25*
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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

Enhance Your Images with Clarity and Color

The Sigma AFL-950 46mm EX DG Circular Polarizer Filter is designed to minimize glare and reflections from non-metallic surfaces, resulting in more vibrant and saturated colors in your photographs. This filter is multi-coated to reduce ghosting and reflections caused by digital image sensors.

Specifications:

  • Type: Circular Polarizer
  • Size: 46mm
  • Filter Factor: 2.3 to 2.8 (+1.3 stops)
  • Coating: Multi-Layer (Digitally Optimized)
  • Rotating: Yes
  • Effect: Reduces Glare and Reflections, Increases Color Saturation
  • Construction: Glass
  • Thread Size: 46mm
  • Front Lens Cap Size: 46mm

Key Features

Circular polarizing filter designed to filter light rays through camera lens

Removes reflections and increases color saturation without affecting color balance

Ideal for nature, travel, and outdoor photography; high-quality glass construction

Specifically designed for use with auto-focus SLR cameras; 46mm thread size

Filter factor between 2.3 and 2.8 (approximately +1.3 stops); 1-year warranty

Specifications

Filter Type
Circular Polarizer
Compatibility
Auto-focus SLR cameras
Filter Size
46mm
Construction Material
High-quality glass
Filter Factor
2.3 to 2.8
F-Stop Reduction
Approximately +1.3 stops
Warranty
1-year

Pros & Cons

👍 Pros

  • This circular polarizing filter is specifically designed to work with auto-focus SLR cameras, ensuring broad compatibility.
  • It effectively removes reflections from non-metallic surfaces like water or glass, enhancing clarity in photographs.
  • The filter increases color saturation and contrast without altering the overall color balance of the image.
  • Constructed from high-quality glass, it offers durability and reliable optical performance for various shooting conditions.
  • The filter is ideal for nature, travel, and outdoor photography, making skies bluer and foliage greener.

👎 Cons

  • As a single-coated filter, it may not offer the same level of anti-reflective performance as multi-coated options.
  • The filter factor of 2.3 to 2.8 translates to approximately 1.3 stops of light loss, requiring manual exposure compensation.
  • It is specifically a 46mm thread size, limiting its direct use to lenses with this exact filter diameter.
  • The provided information does not specify if the filter frame is thin, which could lead to vignetting on wide-angle lenses.
  • Only a 1-year warranty is provided, which is a standard duration but not extended coverage.

Frequently Asked Questions

This filter's primary function is to select which light rays enter your camera lens, removing unwanted reflections from non-metallic surfaces and increasing color saturation without affecting overall color balance.
Yes, this circular polarizing filter is specifically designed for use with auto-focus SLR cameras.
It is ideal for nature, travel, and outdoor photography, as it helps to improve contrast and enhance colors like making skies bluer.
The Sigma AFL-950 has a 46mm thread size, which determines compatibility with your lens.
A filter factor between 2.3 and 2.8 indicates that the filter will reduce the amount of light entering the lens by approximately +1.3 stops, requiring slight exposure compensation.

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