If you’re on a tight budget for photography these are great little lenses with the right adapter clip. With the right adapter you can use these with a smartphone from 37mm lens sizes, at least I think these are 37mm. You can get good adapters for about 8$ or if you’re crafty, you can 3d print one with a magnetic component. I have a bigger lens at 57mm, there’s a difference between the sizes. For the value at the current price this set was listed at, it’s a great buy to upgrade those home photos to studio quality. These are a great addition to any photography set.

This filter kit is a fantastic addition for anyone looking to get more professional results out of their action camera. The snap on design makes it incredibly quick and easy to swap filters in the field, so you never miss a shot while trying to adjust your settings. The variety included in the pack allows for perfect exposure in everything from bright midday sun to softer afternoon light, helping to keep your footage looking smooth and cinematic.The glass quality is top notch, providing clear and sharp images without any unwanted glare or color shifting. I particularly enjoy the diffusion filter, which adds a lovely soft glow to highlights and gives the video a more artistic feel. Everything comes in a sturdy little case that keeps the filters protected and organized in a gear bag. It is a simple yet effective way to take your outdoor filming to the next level with minimal effort.

Perfect fit, easily elevates the footage and protects the lens at the same timeSnapping these filters on is stupid easy. You literally just press them on and they click into place with no fiddling or tools. I was expecting some trial and error but it was more of a line it up and done situation which is perfect when you’re already outside and trying to catch light before it changesThe fit is excellent on the action camera. They sit snug and centered and don’t feel like they’re going to pop off when moving around. I shook the camera around and tossed it in a bag and everything stayed put so confidence level went way up right awayBuild quality feels legit. The glass is clear and clean with no weird color shift and the coatings actually seem to work. Water beads right off and fingerprints wipe away easily. Even stacked against bright sunlight the footage stays sharp and contrast looks natural which is exactly what you want from filters like thisHaving multiple strengths plus a polarizer in one kit is super handy. You can dial things in depending on how bright it is and still keep motion looking smooth instead of blown out. The polarizer is great around water or shiny surfaces and makes colors pop without looking fakeYeah it costs more than basic accessories but you can tell where the money went. Solid materials, clean optics, easy use, and real results on footage. For what you get it feels like a good value and not something you’ll regret buying later

I ordered the 6-pack for the Osmo Action to test.

✅ Positive:
- Good workmanship and good fit on the lens
- the ND filters, which I mainly use when riding a motorcycle during the day, do a good job
- no distortion of the ND filters and secure fit
- the Blackmist filter is good for photos or videos where you want to change the look. Do you have to try it out to see whether you like it
- the CPL filter is good for filtering out reflections, either when taking pictures of water or even, for example, of (clear) painted surfaces of vehicles, motorcycles, etc.

❗ Needs improvement:
- If I had to criticize something, then at most that something simple case. As written if I had to!

Whilst I love using my Action 6 camera there are times where getting the perfect image can be difficult because of the lighting and that's where this little set of filters comes in. I've had several products from K&F Concept and they've become one of the brands I now look to as they've been producing some quality kit and this filter set is certainly well made.Inside the box you get a nice plastic case that holds all 6 filters which are set snuggly in a foam base. The base has cut outs around each filter to enable you to easily remove the one you need without getting your finger prints all over it. The plastic case is quite sturdy so would provide ample protection when placed in your bag. The filters are easy to install as they simple cover the camera lens and are then pushed in to place and are firmly gripped so there's no chance of them coming loose during use.The filter set I ordered includes 4 ND filters (8, 16, 32 and 64), a black mist filter and a CPL filter. To be honest whilst using the ND filters it can be difficult sometimes to see a huge difference going from one to the next but it is considerable between the lowest and highest so it takes some playing about with them to get the desired effects depending on the available light. The black mist and CPL filters on the other hand I use quite a bit when there's quite a lot of light as they do make noticeable differences with softening or removing reflections.For the quality and performance of these filters they are quite competitively priced and complement the camera well to give you options for all lighting scenarios and I would therefore highly recommend adding a set to your kit.

The packaging is solid and well organised, the lenses come in a plastic secure case, keeping them protected. The lenses slot into a foam backing, stopping them moving around and scratching.These are really easy to install, just simply snap them on and away you go, make swapping filters during photos convenient, they fit well with no movement or loosenessThe image quality is noticeably improved, depending on the light situation. The ND filters help manage exposure, keeping footage top quality and smooth, the CPL filter is excellent for reducing reflections from bright light, great for sunsets. The black mist filter is excellent for adding a subtle softness without killing sharpness, great for cinematic shots.My favourite feature has to be the snap on system, being able to switch filters quickly is really convenientI’ve had a few accessories from this brand, they are top quality and I highly recommend, excellent value for money, if you’re serious about getting the best image quality than these filters are for you

In 'Pro' mode and set to Manual on the Action 6 the user has good control of exposure settings, so can set a preferred shutter speed and ISO value, to preserve natural motion blur, but, unless light is particularly poor, the 'footage' is very likely to be overexposed - and that is where ND filters can save the day!The ND filters can reduce light onto the sensor by up to 8 stops, giving a lot of flexibility - in manual mode the camera display will tell you the exposure in + or - EV (1 EV=1 stop) so selecting a filter that keeps that value between -1 and +0.7 should end up giving natural motion and well-balanced exposure. (I shoot in D-LOG-M and use a video editor to grade the footage, and assist with minor exposure variations)The CPL filter can assist in reducing reflections on surfaces as well as getting 'cleaner' colours in sunny situations - just like polarised sunglasses!Black Mist 1/4 can be quite subtle (photo below) in softening the image as well as desaturating colours a little - but can pick up and 'glow' specular highlights very pleasingly - experimentation is recommended, if only as it can be great fun!K&F CONCEPT, in my opinion, have nailed it once again in providing very good quality (no noticable colour cast with any of these filters) filters that are quick and easy to use, and will assist in producing better photos and video with the Action 6, at a price that isn't too prohibitive.

The advertised properties of the filter set are explained in the detailed product description and clearly illustrated, are confirmed by me as far as possible and do not require any further addition on my part.

Material and manufacturing quality are at a high level.
The filter set is aimed at ambitious users who want to take their creativity and the capabilities of their imaging device to the next level.

The required market price of currently just under 55 euros appears to me to be just acceptable for the total service offered and can be justified in individual cases by the utility value.

Item received in good condition in a small branded box. My Action 6 has never been a slouch, yet these pocket-sized filters have given its images a surprising lift. Out on the prom at sunrise the footage looks warmer and more inviting, while the fierce midday light that normally scorches the lens has been tamed.The pack contains six clip-on filters cut from 28-layer optical glass. You get ND8, ND16, ND32 and ND64 for anything from three to eight stops of control, together with a circular polariser and a ¼-strength Black Mist. They pop on with a simple press to fit, held firm by a small anti-slip washer, so the filter stays in place even when the camera is bouncing about on the dog’s harness. There are no awkward screw threads and the unit still slides neatly into my compact protective cage.Changing ND strength takes moments, which lets me keep the shutter at 1/50 s for that pleasing motion blur while the children hurtle down the sand dunes. The CPL knocks back the glare on the water and the Black Mist adds a subtle bloom during sunset without flattening contrast.Robust construction, spotless optics and a genuinely useful spread of effects, all offered without a hint of colour cast. For the money, it is a solid selection of filters that can really help improve your results easily.

I picked up this filter set to help manage the lighting when I am out filming, and they have been a great addition to my kit. The snap on design is really convenient because you can swap them out quickly depending on how bright it is without fiddling with threads. The glass quality seems sturdy and doesn't seem to soften the image at all, which is exactly what I was hoping for. It is a nice variety of strengths in the pack, so I am pretty much covered whether it is a dull afternoon or a really bright day.The black mist filter is a fun touch for giving the footage a slightly more cinematic feel without it looking unnatural. They stay on the lens securely even when things get a bit bumpy, so the fit comes across well made. I usually keep these tucked into a small pocket in my bag alongside my DJI Osmo so I am always ready to film if the light changes. It is a very practical set of tools that makes getting the right exposure a lot easier. I’d definitely recommend these if you want a bit more control over your video look.