This is great product well built. Since it’s metal it is heavier than JJC. Gave it 4 star due to cant attach another magnetic accessory in the front, which you can with JJC

Not sure why my review for this item keeps getting removed.The Lens filter (used on my iPhone 13 Pro Max) adds a fantastic additional level of light control.It is pretty weighty but the magnet attachment is very secure. Obviously it does not work with a phone case on which I felt - given the additional weight - left the phone feeling a little exposed.For what it does (allows higher quality photos in different lighting conditions and reduces glare in bright light/reflections), the additional weight is perhaps a negligible concern.The whole package itself is really impressive… with a high quality, sturdy carry case, cleaning cloth and magnet.

I bought the K&F Concept magnetic ND2—32 filter for my iPhone 14 Pro Max and am very satisfied overall. The filter does exactly what it should: It reliably reduces incoming light and thus enables significantly better video recordings in daylight — a real advantage, especially for cinematic recordings with a longer exposure time. The magnetic attachment is particularly positive. The filter holds securely to the smartphone, fits snugly on the camera adapter and is still quick to put on and take off. The workmanship looks high-quality, the glass makes a very good impression, and there are no visible color distortions or blurring. The fit for the iPhone 14 Pro Max is also perfect — nothing wobbles or fits crooked. In my opinion, the set is ideal for classic smartphone photography or handheld video shooting. The only downside: The filter and adapter are unfortunately a bit too heavy for my planned use with the DJI Osmo Mobile 7P. As a result, the gimbal reaches its load limit faster and has to balance more strongly. For users who film a lot with smartphone gimbals, the weight should therefore be considered. Conclusion: A high-quality ND filter with a very good mount and strong optical performance. Highly recommended for filmmakers without a gimbal or with stronger stabilizers. A star deduction only due to the weight when using gimbal.

Very cool, works well

More than enough for mobile filmmaking

It was used in Namibia - good effect. All you have to do is order by choosing the right mobile phone.

Very nice for log shooting or even normal shooting, and so far satisfied

Totally recommended. I tested it for my iPhone 16 Pro Max and it's the safest and most up-to-date way to use a variable ND filter on an iPhone. Now that I have the next generation I'm waiting for them to release a similar one. I tried this one on the 17 Pro and it doesn't work.

The variable ND filter from K&F Concept comes in a sturdy but quite large zipper pocket, as it also fits the MagSafe adapter for the iPhone 16 Pro Max in addition to the filter. A plastic dust cover and a cleaning cloth are also included, but the cover looks more like packaging material and does not reliably protect against dust. A tight-fitting, tight bag with zipper or Velcro would have been the better solution here. Two boomerang-shaped stickers are also included, whose function remains unclear due to lack of instructions — presumably intended as scratch protection for the iPhone. In use, the filter shows what it can do: As the third variable ND filter in my collection (after two models from well-known manufacturers), it is in no way inferior to the big brands. The adjustable control range with stop is particularly practical — you save yourself the hassle of turning around endlessly in search of the starting point. That is a real plus. On the other hand, I'm missing a lens cap. This may not be an issue for pure iPhone filmmakers, but anyone who, like me, comes up to the required 67 mm with step-up rings urgently needs a suitable cover. Conclusion: The filter is visually and functionally convincing, leaving room for air to rise when it comes to accessories.

At first I was not completely satisfied with the goods. However, customer service proactively contacted me and solved my problem quickly and to my complete satisfaction. Such commitment is rare! Therefore a full 5 stars! The product is good but the service is outstanding!