Filter for Sigma 17-50mm F2.8 EX DC OS HSM

[pkc]

I am looking forward to buy a CPL filter for Sigma 17-50mm F2.8 EX DC OS HSM.
I want to know whether Kenko PRO1D WIDEBAND Circular PL (W) will be compatible with it.
http://www.kenko-tokina.co.jp/imagin...607512524.html
And whether it has any negative impacts?

Thanks.

[Anthony M]

I would assume it would work just fine. I have the Sigma (love it) but I use a Marumi DHG super circular. I'm a cheapskate, and decided to give it a try and have been delighted with the results. I was going to get the B+W first until I saw the Lenstip review.

Lenstip did a pretty comprehensive test between polarizers 3 years ago, most of these are still made. The Kenko ranks #4. It's not a widely available filter in the U.S., so I don't know where it stands price-wise to the others. The Marumi goes for about $75 USD. Personally, I think polarizers certainly have their place and you can't go wrong with a good 77mm one!