Sigma AFL-950 46mm EX DG Circular Polarizer Filter

by Sigma

Product Details

• Shipping Weight: 1 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B0017X6NN2
• Item model number: AFL-950
• Average Customer Review: 4.7 out of 5 stars  See all reviews (182 customer reviews)
• Date first available at Amazon.com: October 2, 2001

Product Description

Size: 46mm | Style: Polarized

Amazon.com

Remove unwanted reflections from nonmetallic surfaces such as water or glass with the Sigma AFL-950 46mm polarizing filter. Polarizing filters are used to determine which light rays enter your camera lens. By rotating the filter--viewable through the viewfinder--and changing its orientation to the sun, you can achieve a variety of different light effects, including saturating the colors, removing haze from outdoor shots, or removing reflections, all without affecting the overall color balance. Note: Circular polarizer?s are specifically designed for use with auto-focus SLR cameras, but they'll also work on manual systems and video cameras without problems.

Technical Specifications

• Type: Circular polarizer
• Size: 46mm
• Filter factor: Between 2.3 and 2.8 (approximately +1.3 stops)
• Multi-coated: Not applicable
• Rotating: Yes
• Effect: Removes reflections and increases color saturation without affecting overall color balance
• Applications: Nature, travel, outdoor photography
• Color temperature: No change
• Construction: Glass
• Thread size: 46mm
• Front lens cap size: 46mm
• Warranty: 1 year

Product Description

Digitally Optimised (DG) Filters EX DG filters benefit from Sigma's multi-layer lens coating, developed to counteract the highly reflective characteristic of image sensors. With older style filters, light would reflect off the image sensor, bounce off the lens and filter elements and re-enter the image sensor, creating a ghost image. The multi-layer coating dramatically reduces this effect. In addition to this, an optimum, neutral colour balance is ensured, increasing the white balance accuracy of the digital camera. Wide Multi-Coated Circular PL It reduces the glare and reflections from glass and water and other non-metallic surfaces. It deepens blue skies, and saturates the colors. The Sigma circular PL filter is designed to give best performance with AF Cameras. You can monitor the changes at different angles through the viewfinder as you rotate this filter.

Customer Reviews

Most Helpful Customer Reviews

95 of 96 people found the following review helpful:

5.0 out of 5 stars Sigma MC UV filter, November 3, 2006

By 

Tullio Fontana (CA, USA) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Sigma DG 52mm Multi-Coated UV Filter (Electronics)

I've bought many UV filters for my cameras, from Hoya and B&W to Promaster and I must say that the Sigma EX MC is the best one. Although most companies claim that their UV filters cut down haze, in reality my experience has been that they really don't. However, I found the Sigma UV filter to noticeably cut down haze and produce very clean, sharp images without altering picture quality in any way. I strongly recommend this filter to protect your camera lens and reduce haze that can ruin your pictures.

53 of 54 people found the following review helpful:

5.0 out of 5 stars Just compare to a cheap one..., January 4, 2008

By 

D. Adams (Lexington, NC) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Sigma DG 52mm Multi-Coated UV Filter (Electronics)

My previous filters from a cheap set I purchased off ebay. They did the job just fine, but had obvious reflections and all at times. When my Sigma arrived, I held it in the light beside my previous filter. There were practically no reflections on the Sigma!

Do yourself a favor, get a decent filter! Multi-coated is the way to go. Eventually reflections will disrupt your photos.

38 of 39 people found the following review helpful:

5.0 out of 5 stars Best UV filter I've ever used, September 21, 2009

By 

S. J. Anderson (Orlando, FL USA) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Sigma DG 52mm Multi-Coated UV Filter (Electronics)

Flat-out, the Sigma EX DG ultraviolet filter is hands-down the best UV filter I have ever used. I've had a handful from Hoya, Tiffen, and Zeikos...and always truly believed that it was just to protect the lens, and the clarity of picture was changed in such minute ways, that it was more or less unnoticeable. However, just holding this lens up next to any of my other UV lenses side-by-side, and you can genuinely see the difference. While $20+ does seem just a little on the steep side for just a UV filter when there are so many out there for less than $5, it's good knowing that unless something tragic happens to this one, I'll never need another. I fully intend to buy one in each diameter I need to cover all my lenses.

PROS:
+ Amazing quality UV filter
+ Excellent finish on the entire product
+ Reduces haze noticeably by simple sight, as well as in all pictures

CONS:
- $20+ may be more than some people are willing to pay for a UV filter

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