K&F Concept 77mm True Color Polarizing Filter HD optical glass, double-sided, 30-layer nano-coatings, circular polarizing filter (CPL), aluminum frame, water-resistant, scratch-resistant, fingerprint-proof I use filters... when I have to. Polarizing filters are among the filters that can make a real difference in terms of contrast enhancement/glare reduction in certain lighting conditions. It is important that I find this filter: - Excellent optical properties. Limited sharpness loss. (as good as it gets). - Neutral color - Adjustable polarization by rotating the filter as intended. - Thin. This filter is thin and should not cause vignetting in most cases. For the same reason, it can be combined with another filter without the risk of vignetting. While this is standard these days, it makes removing the filter more difficult than with thicker filters. - The threads are well formed and the filter screws on easily. - The light loss is about 1 stop, which is typical for today's high quality polarizing filters and better than the 2 stops of previous generations. Note for landscape photography: It is not recommended to use a polarizing filter with ultra wide-angle lenses in landscape photography, as they produce an uneven sky. That's a good filter. It performs above its price. Worth considering. Accordingly recommended.

In my use, nothing can be faulted, be it in the autofocus, the brightness and the robustness at the body level. Pay close attention when turning the dial to change polarization, as this can quickly change your colorimetry.

Great polarizer. He does his part well. Be careful, it should be used judiciously and when necessary. A note: no explanatory sheet in the package, no guarantee. And yet it is not a cheap product. I consider that a significant shortcoming.

It's great, and on top of that there is another thread with the same number of mm as the filter to add K&F Concepts Blach Mist or VND True Color...

There is only the latest K&F Concept C-PL filter, tested worldwide, and the picture is very bright and beautiful, and there are no problems at all. However, the silver frame has major irregularities and is slightly thicker. Ease of putting on and taking off has been improved, but as this part gets thicker, it will get in the way at the last minute when trying to put on the lens hood later. If you press it hard it will fit, but it will also catch when you remove it. So it's a good idea to attach it in the order hood → filter and when removing filter → exhaust hood.

The price is higher than other companies, but it's a quality product that goes with it. The influence of the CPL-typical color cast is very small and easy to use even in portraits.

It works as expected

Excellent quality and 10/10 yield

good value for money does the job very well

As expected... very fast shipping