K&F Concept is a permanent guest with me, whether for my cameras or the GoPro. You can always use ND/PL filters anyway and in this quality anyway. The filters are super processed, present at just the right strengths for filming and help generate much more cinematic shots in broad daylight. Because we all know what happens when you film with an action cam with a shutter speed that is too short or when the camera even reaches its limits. Jerky and overexposed videos that look as if a cheap action cam was at work. And the GoPro can also be completely different, believe me! We use the GoPros on our FPV drones, i.e. the drones that you fly with such funny glasses. Here it happens extremely often that the exposure situation changes. And it's not a bad thing in itself if the camera regulates the whole thing automatically. But in order not to reach the limits of the camera in bright light, ND filters are also really useful here. And here we not only have ND filters, but even a combination of ND and PL filters. So the reflections can also say goodbye directly. Also especially cool when flying over water. In summary, the K&F Concept ND/PL filters are a great addition to camera and drone enthusiast's gear. The filters are of high quality and ensure more cinematic shots, especially in bright daylight. Glare and reflections can also be reduced thanks to the combination of ND and PL filters, which is particularly useful when flying or filming over water. Overall, the K&F Concept ND/PL filters are a worthwhile investment for anyone looking to take their recordings to the next level.