Sigma 52mm EX DG, Digitally Optimised, Circular Polarizer Wide Angle Multi-Coated Glass Filter.

Sigma
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About Sigma 52mm EX DG

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. The Sigma wide multi coated circular polarizing filter is very thin, so it does not cause vignetting with wide-angle lenses. You can monitor the changes at different angles through the viewfinder as you rotate this filter.

Sigma 52mm EX DG Reviews

Reviewed by 1 customers

(3 of 3 customers found this review helpful)

 
5.0

Excellent filter for wide angle lens

By

from New Bern, NC  -  Semi-pro Photographer

I had a Hoya Moose Warm Polarizing filter, but on my new Panasonic DMC-FZ150 because of the 25mm wide angle lens I was getting uneven coloration and some vignetting on the edges when shooting in 25mm. This Sigma filter is super thin, beautifully constructed, and provides even coloration with no vignetting. I love it, and also use a Sigma UV filter when not using this one. Highly recommend both filters!

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evert j  I am trying to find a polarizer filter that is better than the one I have: Kalimar circular PL 52mm. It seems to change the colors quite a bit. Green (leaves) can change from silver to green and then to black. The effect is also different when I tilt the camera. Another effect is that the image at the top and the bottom of the image appear brighter than in the center (there is a band in the image). Is this typical for polarizer filters, or is it a Kalimar issue? Is the Sigma 52mm EX DG any better? Any advice would be appreciated. Btw. Camera is: Panasonic HDC-SD90. Thanks, Evert Jan.
RICK C  Yes, I to was displeased with this filter (it seemed way too dark) and have replaced it and had no further problems. Am now using a Vivitar UV filter or you can't go wrong with Tiffen filters. Happy shooting.
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