Originally posted by therion It depends on how you understand the word "work with". I probably has some polarizing properties. But I bet, it is not multi-coated as the seller writes, because filters that are really coated/multocoated usually state that on the filter ring and this one doesn't. And for this size the filter cannot be of high quality at that prize. It is simply impossible to make such a big polarizing filter in good quality for and end-user price like this.
So, what you get are two glass plates of whatever quality, uncoated and with the cheapest polarizing foil sandwhich in between. What you get for free also, are a lot of reflections and flareing (2 glass plates = 4 glass surfaces) and probably some IQ degradation from the rough glass surface. At best, the glass is flame polished, but not mechanically polished.
Do you need a polarizer for that lens at all? And if so, you want to achieve the typical pol-effect and you would want to make visible the quality of your lens, which is not a cheap one. I think, in that case, you should safe your money and buy something better.
And if you just want a filter for lens protection, you should preferably use a good, long lens hood instead, which gives usually enough protection and also increases contrast.
Ben