Even if the GoPro cameras take very good pictures with the basic equipment, in certain situations you can't get any further without the appropriate filters. The filter set from K&F Concept offers very good quality here.

I have been a big fan of the filters from K&F Concept for a long time. I have also been using the filters from this manufacturer on my drone for some time and am very happy with the results. The filters for the GoPro also really impress me.
The filters fit perfectly on the GoPro (in my case the Hero 9). They can be changed in a few seconds and hold just as securely as the original glass of the GoPro. Since the filters are only slightly heavier than the original glass, there are no problems with using a gimbal.

I really like the fact that this set combines ND and PL filters. So you have the combination of "sunglasses" and polarizing filter directly in one filter attachment. The filter is rotatable so that you can also adjust the direction of the polarization. On bright summer days, or even in the snow, the filter set can noticeably improve the images. In most cases, however, the ND8 or ND16 filter will be used. The two higher filter levels are primarily suitable for long exposures or in extreme sunshine.

The optical quality of the filters is very good. There are no problems with distortion or other image disturbances. In terms of quality, there is absolutely nothing to complain about with the K&F filters.

Conclusion: A very good filter set at a reasonable price (currently around 70 euros). I can only recommend the filters from K&F Concept, I have never had any problems with this manufacturer. Definitely a full 5 stars.