PolarPro

Great looking product, expensive compared to the competition. It fits very snug on the x100vi, making it an almighty task to remove. It is virtually a permanent feature on my camera, because I can't remove it. The retention screw is unnecessary as it is so tight.

Their CS is great. The product is great. It’s unfortunate though that if you buy the direct thread filters, PolarPro does not offer a way to upgrade to their magnetic filters. You can neither retrofit my the direct thread, nor exchange/trade for the magnetic upgrade. The only option is to buy a brand new set and have multiple of the same filter.

The product works fine but they bundle three filters together, two of which I will never use. I asked if they would sell a red filter only or even a three pack of red filters but they said no.

Customer support ewas very responsive and polite, the real problem though, the filter which does not fit the Mini 4 Pro (2 filters tried on 2 different drones), was not solved. Nobody could tell how much force shall be applied or why it would make sense to replace the filters. Will return the filters where I bought them together with a hint that they do not work as advertised. Will buy Freewell filters, they fit perfectly.

Make more filters to fit a 55mm thread, especially an ND PL filter, or make a step up ring that will fit an 82mm filter onto a 55mm lens.