K&F Concept 67mm Circular Polarizer Filter Ultra-Slim 18 Multi-Coated Optical Glass Circular Polarizing Filter for Camera Lenses with Cleaning Cloth (K Series)

Need I say more?

Very good.

Works good

A budget option when you just need a circular polarizer filter! It's lightweight and relatively slim. As I tested with a 13mm lens with an APS-C camera, I didn't see any significant vignetting or color-shifting. However, the only con I could find was it's not as smooth as the more expensive brand CPL filter, and sometimes when rotating the filter counter-clockwise, the filter may lose from the lens. So just keep that in mind.

I mounted this on an Insta360 cage to cut down on glare from the sand of a dry lakebed. I tuned it by hand before I mounted it on a suction cup, and was able to dramatically improve some of the fogging I'd seen in previous videos. To be clear: this is a bit of a heavy-use scenario for this kind of filter, but I also have had similarly improved results when I took it to a daytime soccer game, and to an amusement park. I hand-held the camera and filter and found that the results reflected the real-time adjustments that I made. I can easily recommend this based on the MSRP.

Bad quality, got stuck on the camera lens.

Ein sehr leichter und flacher Filter in bester Verarbeitungsqualität. Keine Vignettierungen bei Verwendung an Weitwinkelobjektiven. Die AF-Funktionen der Kamera werden nicht beeintrachtigt.

Toujours satisfait des filtres KF Concept. Bonne construction respire la qualité, la robustesse. Très compétitifs au niveau des prix, surtout la gamme Nano-K, qui, même étant "l'entrée de gamme", sont très qualitatifs et performants.

Ein guter polarisationsfilter

is pretty decent i can be better.