had actually used the K&F Concept ND filters for my DJI drones and GoPro for years and was always satisfied with them. Now I have received this from K&F for testing my new GoPro. Delivery was quick thanks to Amazon. The filters fit my old GoPro 10 and also my 11s. The filters from K&F Concept too, of course. There is not much difference in price between the two sets. K&F are about 5EUR cheaper. The filters are well made and sit firmly on the camera body. Even with a lot of action and turbulent scenes, there is no need to worry. The filters remain reliably in place. The exposure time is lengthened by the ND filters and the pictures simply look much better than without them. There are some good apps that recommend certain ND filters depending on location, time of year and position of the sun/time. Lens flares in backlit shots are also largely suppressed. The lenses are easy to clean and a case is included for transport. I can only recommend. I will use these ND filters for the GoPro 11 and my son will then get the GoPro 10 with the K&F Concept filters. :) How come? Because in detail, the K&F are a little better, especially with backlighting in the sun. But only minimally.

Great set of twist-on filters - and they fit the Hero 11 Mini too. High-quality workmanship, very beautiful glass. I find I get the best results manually, not fully automatically. Three ND filters and a CPL. The circular polarizer is a must for shots with reflections — such as glass and water. 100% satisfied!

Four filters are supplied, which can be easily attached to my GoPro Hero 10. All four filters make a very valuable and flawlessly processed impression. It can be fixed with a single movement and then the filters are firmly in place. Even if you ride the bike over roots and other bumps, the filters stay in place. So there is no risk of losing them. However, they can be easily removed again. The shots with the filters are sharp, but the colors come through more strongly. Especially in bright sunshine or fast-flowing water, the shots with the filters are much more convincing and look professional.

Here you get a practical filter set for the GoPro Hero. The optical properties of the filters seem to be very good and at a fair price. The filters fit easily on the GoPro Hero. I have had good results with these filters.

The ND filter set for the GoPro Hero 9 - Hero 11 was well packaged and delivered quickly. The four supplied ND filters should also act as polarizing filters. You can get great results with these filters. Especially on sunny days you catch more details. But the filters are also ideal for water recordings or the like, as metallic reflections are eliminated. I could also see this in my test shots. I had similar experiences with the ND filters. These are like a pair of sunglasses for the camera, the higher the value, the darker the image. When filming in 4K 30fps, the shutter speed should be 1/60 to make the footage look cinematic. However, this is impossible on sunny days, even if the ISO is 100. So it needs an ND filter to darken the image. If you want to record with 60fps, you should set the exposure time to 1/120. This requires an ND filter with a small value. So far I have only used the ND8 and sometimes the ND16 filter on very sunny days. The other filters are only suitable for special applications or for long exposures. I am also satisfied with the processing quality of the filters. They are made of aluminum and glass and are very light. The filters can also be attached and removed without any problems. They also sit very firmly on the camera. Finally, you get inexpensive ND filters with an integrated polarizing filter that help you record the video with the ideal exposure time.

tested the ND/PL kit. The filters are delivered protected in a storage box. The attachment is very easy thanks to the bayonet lock. The filters fit perfectly and firmly on the camera - I use the GoPro Hero 11. The processing of the filters is impeccable and the price is therefore justified. I've been pretty happy with my no-filter shots so far, but these filters really add value to the shots. Thanks to the 4 filter strengths, you always have the right one for every exposure situation. The polarization is a perfect help with glare and reflections - I already knew that from my polarized sunglasses. With the use of filters, special effects are also possible - eg intentional blurred motion due to longer exposures, which would always lead to overexposure without filters. Conclusion: If you want to exploit the possibilities of your Hero 9/10/11 even more, this filter set is of very good quality, so I give it 5 stars and a purchase recommendation.

This is tough to beat. Not only do you get a 100mm GLASS (not plastic) 10-stop ND filter, but you also get the filter METAL mount and multiple METAL lens adapters. Even if you need to buy step-up/down adapters because the ones included do not fit your lenses, this is still a bargain. Even though this comes in at well below the price of other 100mm 10-stop filters (without the mounting system), it performs excellently.

My unit doesn't produce any noticeable color cast, but I also shoot solely in RAW, so a color cast wouldn't be an issue anyway. The case for the filter is firm, so I don't worry about it very much when it's in my camera back, and the soft lining keeps the filter safe from scratches (so long as nothing coarse gets inside, of course). Better still, the filter mount features a second slot should you wish to use additional 100mm filters (e.g. graduated filters). I point out the size because this is the "standard" in these filters, rather than the more common 80-something mm ones you see in comparably-priced square ND filter bundles that use smaller, cheaper plastic filters instead.

The only issue I found, and this is really just nitpicking at this point, is that the filter mount never really feels very securely attached to the lens. The filter and mount won't fall off if the camera is moved or tilted forward, but the mechanism that attaches the mount to the lens adapter could be a bit tighter fitting in my opinion. Nevertheless, great product at a great price. Anything "better" will be considerably more expensive, and even then, how much "better" will it be?

I have it mounted on an aluminum go pro hero 8 black housing...Even when the ring is tight...it vibrates and rattles with each step.....go pro audio isn't horrible....but it sure as hell is with the lens making all sorts of racket....The 10$ amazon basics polarizer works about as good removing glare(polarizer filters usually either work or they don't...none are leaps and bounds over the other) but the image quality is better on this one.