Home > Consumer Reviews > Sigma EX DG 77mm Wide Multi-Coated Circular Polarizer Filter

This filter has done a fantastic job for me. I use it on my 10-22mm and 70-200mm lenses. Although I didn't need a slim filter on the 70-200, I liked it so much for the 10-22, I figured I wouldn't bother testing out another. This filter has front threads so I can attach a lens cap. I love that feature because I sometimes put other items in with my lens, so the protection is key. It's worth the extra money to get this filter.

Purchased this filter to go on my Sigma 10-20mm wide-angle Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Nikon Digital SLR Cameras and it works perfectly. This filter was designed with this lens in mind or at least it would appear that way. Vignetting is minimal. Great unit.

I've been using this on Canon lenses for some time. Over the years, I've tried the cheapest polarizers I could find and slim, expensive German models. The cheap polarizers work, but their thickness means a lighting penalty: you lose at least 2 stops of light, and they introduce vignetting (fall-off at the edge of the frame) and reduce overall image contrast. That's why it's worth paying more for this model, which performs every bit as well as my expensive German slice of glass but at a far more reasonable price.

This filter cuts glare without a great penalty in exposure, and I haven't been able to spot any vignetting. It is very solidly constructed, and I like that the outer metal rim of the filter is notched: that means I can use one finger to dial in the right angle of polarization when using a lens hood.

Overall, I am very impressed -- it's worth spending a little more to get far better performance.

I purchased this filter for use with my Canon 24-105L, and I'm happy that I chose this one. There are less and more expensive filters to go with; I chose the middle ground. For the wide end of my lens's range, I figured it would be best to go with this specialized polarizer, especially since I have a full-frame sensor that is more sensitive to vignetting. At 24mm, a small amount of added vignetting can be seen, but I don't find it to be significant.