Looks good so far!

got a cage for my new GoPro 12 that allows for traditional 52mm camera filters. Usually you have to get the funky square filters for the action cameras, so it's pretty cool to be able to use filters I already own. But I didn't have a good UV filter that wasn't already used on my regular camera lenses, so I got this filter and it works well, and I appreciate the inclusion of a lens cap. The only negative thing about this filter when used on a GoPro cage is that I get a little vignetting when using the camera on the widest setting, "Hyperview." I rarely use Hyperview, so no big deal, but it's worth noting that this thin filter may not be thin enough if you're using it on a super wide angle lens. Other than my minor issue, which probably only occurs when used with a GoPro, I can't find any other faults. If nothing else, I've added another layer of security to my expensive action cam.

have probably 20 reviews on different filters from this company. I don't think I've ever had a reason to write a bad review either. I don't have any calls here either. These clearly use the same high quality optical material. It's just a different form factor, this case for a GoPro. The filters are of the excellent quality I have come to expect from K&F Concept, so they didn't make the materials cheap just because the filters were a different shape and smaller. I bought one of those kids that give you about 100 things for your action camera and it comes with some filters. You can just hold them up to a light and see the difference in quality between these and the ones that came with this kit. They're so much better. I find that for an action camera you need a neutral density filter even more when shooting video in very bright leaf-lit areas. It lets you open your aperture if you want a shower in depth of field, and lower the frame rate if you need that. These are different than a polarizing filter if you're just worried about glare, though. If your problem isn't glare, but simply too much light all around, then opt for a neutral density filter. Luckily, this kit includes three stops of neutral density apertures starting at 1/8 and also gives you a circular polarizing filter to eliminate that glare. The filters fit the GoPro perfectly so I don't have to worry about losing one and great optical quality. I would say such a kit is absolutely essential if you own an action camera. I'm not sure if the value for money for this set can be beat anywhere else.

Bought the polarizer for my DJI action camera, filter was within expectation.No risk of loosing it when camera in use.

The filter fits the action camera perfectly, and the optical quality is excellent too! CPL filters are a must have for filming. I highly recommend this kit.

The filter works excellently, as I know it from my SLR camera. Since I don't have a GoPro camera, I had to make an adapter ring to attach the filter to my action camera.

The optical quality of the filter is not correct. The filter gives almost all images a clearly visible red cast. If you don't want to correct the color of all polarized photos, it's better to use other products.

The optical quality of the filter is not correct. The filter gives almost all images a clearly visible red tint. If you don't want to correct the color of all polarized photos, it's better to use other products.