I’ve been using K&F filters for a while now, and they’ve consistently impressed me with their quality and performance. These filters are a game-changer for my footage, helping to elevate the overall look and feel of my videos. They fit seamlessly onto my Osmo Action 6, with no issues during installation. The fit is snug and secure, so I never have to worry about the filter slipping or coming off during use – a big plus for anyone who uses their camera in dynamic environments.One of the best things about these filters is how easy they are to use. There’s no complicated setup – just attach them and you’re good to go. The build quality is solid, and I really appreciate the included plastic storage box. It’s sturdy and safe, which helps keep the filters protected when not in use, especially when I’m out on shoots or travelling.Performance-wise, the filters work perfectly with my camera. I’ve noticed that they don’t add any unwanted colour cast, which is something I’ve had issues with on other filters before. The clarity of the footage is improved, and it helps enhance the overall image quality without compromising on sharpness or colour accuracy.Whether you're a beginner or a more experienced videographer, these filters are a great addition to your setup. They’re well-made, easy to use, and provide noticeable improvements to the quality of your footage. Highly recommend them for anyone looking to take their Osmo Action 6 to the next level!

This K&F Concept 6‑pack is a solid upgrade if you want more creative control out of the DJI Osmo Action 6. The HD optical glass looks crisp, and the multi‑layer nano‑coating helps keep reflections and color shifts in check. The CPL cuts glare nicely for water, snow, or bright outdoor shots, while the ND8/16/32/64 filters give you smooth exposure control when the sun is doing too much.The black diffusion 1/4 filter is a fun bonus — it softens highlights just enough to give footage a slightly more cinematic, less “action‑cam sharp” look. Each filter snaps on securely, stays lightweight, and doesn’t throw off the balance of the camera.A compact, well‑rounded kit that adds flexibility, polish, and a bit of creative flair to your action‑cam footage.

The K&F CONCEPT ND8&PL + ND16&PL + ND32&PL+ ND64&PL Filter Kit arrives in a plastic carry case with a foam inner that has been sculpted to accommodate the 4 filters - they are arranged in increasing strength from top left to bottom right.The filters are multi-coated with the final layer being quite resistant to picking up fingerprints as well as beading water drops for easy removal using the provided cleaning cloth. They are lighter (6.3g) than the standard lens protector (10g) with a thinner surround, the very front ring rotates the Circular Polariser, the inner ring is used to screw / unscrew the filter from the camera.If you have not removed the lens protector previously, it may be rather stiff to unscrew...With the protector removed, fitting the chosen filter is simply a matter of screwing it in to the lens surround. The fit is very positive and should be as moisture resistant as the original protector as the internal design mimics that of the original. Removing or changing the filter is as simple as unscrewing and swapping filter, or replacing the lens protector.ND filters are usually used to reduce the amount of light reaching the sensor under bright conditions (or for creating cinematic effect), in order to get best utility from the filter set, setting the Action 6 to "Pro" will permit changing the ISO range used by the camera, as well as setting shutter speed ranges. Limiting the ISO to the lowest practical will make the best of the filters intended function, permitting control of light onto the sensor. The DJI MIMO app (which I dislike immensely!) does serve a useful purpose to monitor the settings the camera is using.The filters, in use, are as simple as it gets - the CP function can be used to reduce reflections from shiny surfaces (water is the most common use) as well as improve saturation of colours - a handy rule for sunlit scenes and a CP is that if the sun is shining onlto one ear, the direction the camera is facing is in the ideal (90 degrees) direction from the sun for maximum utility. Be aware that blue sky can be unevenly darkened when using the CP filter, which can look unnaturally dark over a portion of the sky, adjusting the CP slightly can reduce the effect.As far as value goes, 4 ND filters, each with a built-in CP filter for (currently) £44 is almost too cheap, given the quality of the product. (the 2 landscape photos below were taken without and with one of the filters, the CP filter enhancing the sky colour and reducing some reflections from the lake - the sun was shining on my left ear...)

Returned because I didn't read. They won't fit for an action 4 (the action 6 lens is slightly bigger). The packaging and parts are high quality however. Steel and glass. The polarized lenses are spinable to account for viewing angle.

This ND filter kit from K&F Concept is of top notch quality as usual. They are quick and easy to screw onto the camera, although you do lose any guarantee of it being water-tight so be aware.As with previous ND filters I've had from K&F, these are excellent quality glass, not impacting negatively on image quality at all from what I can tell, and offering a good amount of light restriction, allowing you to reduce your shutter speed for more cinematic motion blur.They are good value at £40 for a set of 4 and i would definitely recommend them as they do exactly as is needed. Just a slight shame they don't pop over the existing glass to maintain the waterproofing, like the official DJI ones do.

I am a big fan of this kit. Excuse me while I wax poetic and maybe oversell it a bit.First of all, there is a big difference between screw on filters and snap on, and I will die on that hill. Many people prefer snap on because of ease and speed of attaching/removal, but to me the extra few seconds and patience required is worth if for security. These filters aren't going anywhere. No risk of them popping off (which DOES happen), and these is no risk of weird wobbling or distorting from a filter that isn't secure.As far as use goes, these filters cover pretty much everything you need unless you are planning on some super specific shoots, which I won't be doing. Cutting brightness, reducing glare, getting depth, beautiful water shots, gorgeous precise sharpness.... it's all here. K&G Concepts delivered in one pretty affordable package.

For osmo action 6. If you’re looking for high-quality CPL and ND filters looking no further. I have been using K and F concepts for a year now and really like their quality durability engineering and packaging. I can’t say enough about them. I think they’re up-and-coming and gonna do well it really well in the photo video market.

The build on these filters is impressive and they feel sturdy when you are handling them. They screw on just like the original lens cover, which gives me a lot more confidence than the magnetic ones that sometimes feel a bit loose. The glass quality comes across well made and I haven't noticed any weird color shifts or loss of sharpness in my footage. Having the polarizer built into the ND filter is a smart touch because it saves so much time when I am trying to cut down on glare from water or wet roads.I have been using these quite a bit lately while I am out testing new spots for my robot vacuum to navigate at home, as the light in my sunroom can be really tricky to capture without them. The coatings seem to do a good job of repelling water drops and fingerprints, which is essential when you are messing around with gear outside. They fit perfectly with my DJI Osmo setup and don't add any noticeable bulk. These are a great addition for anyone wanting more control over their shutter speed in bright conditions.

I was recording on the beach with LOG and it works great!

This review is based on the ND/PL combined filters, ranging from ND8 to ND64.I recently got the new Osmo Action 6 and thought I'd give these a go as my first foray into using filters (aside from a basic ND filter that my older digital camera has). It's a solid upgrade if you shoot outdoors, especially at this time of year with the low sun. They're well‑built, easy to attach, and instantly improve footage in bright or reflective environments.Pros:Smooth screw‑on fit - attaches securely with no wobble once you've removed the OEM lensGreat glare reduction - cuts reflections on water and glassCleaner motion - helps avoid harsh, jittery footageSharp image quality - no colour shift or softness vs the original imageUseful range of ND strengths - works from cloudy days to harsh sunCons:Polarisation angle needs attention - effect changes slightly as you rotate the camera, although this is to be expected with a combi filter.Overall a reliable, well‑made filter set that noticeably improves exposure and colour outdoors. Great value if you want smoother, more cinematic action footage. Although around £44 at time of review, there is currently a voucher to get it for under £40. Definitely a great value piece of kit to include in your camera bag.