[Multi Coated] In South Florida bright sunlight is a big problem, this solves the problem.

[Aluminum] I use this, and it works as intended. No complaints and nothing to worry about.

[Multi Coated] Well made, didn’t have any issues, works perfectly, gives my visuals amazing skies, includes pouch and cleaning cloth, works with Tilta mini mattebox

[Glass] very, very good quality

[Aluminum] I purchased this because I could not afford the more expensive brands. I figured I was going to get what I paid for and have some regrets but to my amazement , it turned out to be very high quality glass!!! This heavy quality glass even comes nicely wraped on all four sides with a rubber seal which makes it easier to handle and protects against chips. It even comes wraped in a large velvet cloth and a impressive Velcro case that is padded. My photos are so much better now with day shots and it beautifully removes reflection in the water and really brings out the blues in the sky. This glass was worth every penny. I plan to buy more glass from this company soon!!!

[Multi Coated] Really nothing to complain about. Great product at a great price. We almost always leave it in the mattebox. Extremely useful

[Aluminum] Good price for a good glass

[Glass] This is one of the only 2mm CPL filters available in 150x150mm. It does a fine job filtering out reflections and polarized light without reducing desirable light. It is not as dark as many other CPLs, and therefore may not appear as strong; (e.g. it won't make the contents of your computer screen disappear). That doesn't mean it's weak, though; it seems to do its job more efficiently than other filters, without sacrificing a lot of the non-polarized light in the scene, and therefore without tinting colors or causing other issues like some CPLs do. In other words, this is a really good CPL that will make you realize what a real CPL is supposed to do. If you're looking for a square polarizing filter and don't want to get a linear polarizer (as they don't work with autofocus), then this is an excellent choice.

[Multi Coated] This circular polarizing filter (square glass) works with my 3x3 square filter holders on my chrosziel s1001 3x3 french flag, which I use with my Canon EF lenses. Hurrah!

[Multi Coated] I never go anywhere without a polarizer filter! Works as expected and the photos show rich color!