A variable ND filter that makes it easy to control shutter speed and exposure when shooting videos or taking long exposures on the iPhone 17 Pro. Since the amount of light reduction can be continuously adjusted from ND2 to 32, it was easy to match the target atmosphere while suppressing white skipping even outdoors in fine weather, and it was convenient that there was little trouble changing filters for each scene. The magnetic type makes it quick to put on and take off, and the setup before and after shooting is short, so it can be operated at a good tempo even when shooting with a smartphone. Both sides are magnetic and have a strong magnetic design, so there is a sense of stability when attached, and the impression is that it does not shift easily during shooting. Since it comes with a portable storage case, it is easy to protect the lens surface when carrying, and I can safely put it in my bag even when shooting outdoors. I think it's an item that goes well with applications such as “I want to show smooth movement” or “I want to create expression by lowering the amount of light” with long exposures and videos, and it's an item that further expands the range of shooting expressions even on smartphones.

Good product. Robust quality that makes the price totally worth it. If anyone could recommend a CPL filter that can be attached to the ND filter magnetically, I would appreciate it.

I've been searching for a lens that fits my iPhone 17 Pro without a) having a load of reflections, due to not fitting properly, or b) costing way too much!This does exactly that. Build quality is fantastic, comes in a great carry case, and fits extremely well – of course most importantly, makes a huge difference when recording videos on my iPhone!

Since I treated myself to the new iPhone 17 Pro and the camera there is now so good that I often leave my large SLR at home, I still didn't want to do without using filters. In particular, I often lack a polar filter (CPL) in smartphone photos to get reflections from water or glass and make the sky bluer. The K&F Concept system is brilliantly solved. Thanks to the strong magnets (front and back), the clip securely holds the device. But the coolest thing is: It's a standard 58mm thread. This means that I can not only use the included CPL filter, but also screw on my old ND filters from the camera bag. The fit is precisely tailored to the 17 Pro camera module. Nothing is obscured, the flash remains free. The included CPL filter delivers great results — especially when taking landscape photos, the colors look much richer and reflections disappear. The small bag that comes with it is convenient to transport, as everything is well padded. Conclusion: If you want to get more out of your iPhone camera, you need this part. It almost turns the mobile phone into a professional camera. Price-performance ratio (just under 40 euros) is right for the quality.

I use the K&F CONCEPT filter clip together with my iPhone 17 Pro and am positively surprised how well the whole thing works. Thanks to the magnets, the clip is securely attached to the mobile phone and the 58 mm CPL filter is quick and easy to attach. Especially outdoors when shooting landscapes or cars, you can see the difference: reflections are significantly reduced and the colors look stronger without being unnatural. The workmanship feels high-quality and everything is stable, even on the go. It is important, of course, that it is really only compatible with the iPhone 17 Pro and 58 mm thread filters — you should know that beforehand. If that fits, it is a very practical accessory for anyone who wants to get a little more out of their photos with their smartphone.

This magnetic adapter with polarizing filter is for those who like to take care of their photos and videos taken on the phone, without going into complex settings. From the very first uses, we understand the value of this accessory: it allows better control of light and reflections, while remaining simple to install and use. It is an ideal solution to improve the rendering of images on a daily basis, whether you shoot often or occasionally. The ease of use is one of its great assets. The magnetic system allows the filter to be attached quickly, without tedious screwing or delicate handling. It can be put on or taken off in seconds, which is very convenient when alternating between different shooting situations. The support is stable, even on the go, and the whole thing stays well aligned with the phone's lens. This gives a real feeling of fluidity to use, without breaking the rhythm of taking photos. In terms of functionality, the polarizing filter plays its full role. It helps to reduce unwanted reflections on shiny surfaces such as water, glass, or certain bodies, while increasing contrast and color depth. The sky seems more balanced, the landscapes become more legible and the details stand out better. This type of rendering is particularly appreciated for photos outside, during walks, trips or urban scenes bathed in light.

It's a creative must-have item that further evolves the iPhone 17 Pro's high-performance camera. Since the amount of light can be freely adjusted from ND2 to ND32, it is possible to shoot smooth videos and fantastic photos with a slow shutter while preventing “white flying” even in bright places during the day. It perfectly combines high optical performance with the convenience of magnets. Good point: It uses strong magnets, and can be attached “perfectly” to the iPhone 17 Pro's MagSafe mechanism or special case in an instant. There's a sense of speed so you don't miss out on shooting opportunities, and an overwhelming sense of security that it won't shift or fall during use. By simply rotating the filter frame, you can smoothly switch between the 5 levels of dimming. When shooting videos, the shutter speed is fixed to create “natural bokeh like in a movie,” and you can easily enjoy long exposures that take smooth, string-like pictures of waterfalls and river flows with just one smartphone. It's nice that you can use this somehow without thinking too much about it. It's easy to use without any particular expertise. The precise design prevents light from escaping through gaps in the filter and suppresses flare and ghosting. Since high-quality optical glass is used, it is possible to maintain clear and colorful images without compromising the resolution of the iPhone 17 Pro. It comes with a sturdy and slim special case, and the portability so you can always keep it hidden in your bag without worrying about damaging the lens is attractive. The professional “Cool Design” black housing and exquisite memory engraving are truly professional specifications. I think the appearance on the iPhone 17 Pro is very cool and nice

The magnetic system is what makes this make sense, because if it were with tweezers or with a rare piece, you're already lazy. Here you bring it closer to MagSafe, align with the cameras (and you don't have to be a surgeon), and that's it. It has the cutout for the flash and it doesn't cover it, and the hole for the antenna looked like smoke to me but hey, no signal cuts or anything. In terms of use, the polarizer is helping me especially with photos of shop windows (less reflection of my face, thank you) and with water, which is where it sings the most. I also notice the colors a little “cleaner” and the contrast goes up without looking like a rough edit. I haven't seen a loss of quality in the photo, or vignetting, or that “soft image” effect. The only thing is the case: with a good MagSafe case it goes perfectly, with a case without a powerful magnet the support loses its grace, and if the case has a raised ring around the cameras it can be slightly tilted. I don't always leave it on, I use it as an accessory, I keep it in its hard case and that's it, so it gives me zero problems. In short, if you like to take photos and you are annoyed by reflections, this CPL for mobile is a success and you will also be able to use other 58mm filters in the future, and once you enter the world of filters you can no longer get out. You are warned.

The construction quality is very good, you can tell that it is a brand that knows what it does in photographic accessories, at the level of other brands that until not so long ago were leading the way. The magnetic system works very well, the adapter is attached to the iPhone's camera module using MagSafe with a fairly strong connection that doesn't feel like it's going to come loose. The best thing is that you can use it with the cover on, you don't have to take it off every time you want to use the filter. The design has specific cuts for the flash and antenna so it doesn't cover anything or interfere with the phone's signal, this is important because other adapters I've seen don't take it into account. The included 58mm CPL filter is polarizing and works very well to reduce glare and reflections on surfaces such as water, glass or windows. I have tried taking pictures in the pool these days and the difference is remarkable, the colors of the sky are also more saturated and defined. The filter is screwed into the adapter so you can change it for others of the same size if you want to try different effects, K&F sells ND and combined filters that are compatible. The pack comes quite complete with a hard case to store everything, a cord to carry it hanging and cleaning cloths for the glass. The overall feel is of a premium product, both the adapter and the filter have good finishes and feel solid in the hand. The filter covers all three cameras without problems and I haven't noticed vignetting or loss of quality in the photos.

[Completely Specially Designed for iPhone 17 Pro & Variable ND Filter (ND2-32) Included] Specially designed to fit the camera module without difficulty, including a triangular lens hole. I actually attached it and shot, but there was no sense of incongruity due to misalignment or gaps, and there was no need to make extra adjustments during shooting. The included variable ND filter can adjust the amount of light from 1 to 5 levels, making it easy to express images that are conscious of shutter speed even when shooting outdoors during the daytime, and I was able to test the flow of water and the movement of light in a different form than usual. [9N suction power with strong magnets on both sides & plenty of expandability] MagSafe compatible magnets have stable adsorption, so I didn't feel uneasy when shooting normally or using a tripod. Since it can be attached and detached quickly, the fact that there is little trouble preparing for shooting is helpful even in everyday use. Since the structure allows MagSafe accessories to be attached to the back, the fact that the shooting style can be changed according to the situation is also practical. However, in situations where strong vibrations are applied, I felt that it was necessary to check the fixed state. [Full silicone coverage & protective design for a safe feeling of use] Since both the front and back are made of silicone material, it doesn't slip easily when you hold it in your hand, and I was able to hold it stably even when the filter was attached. There are protective pads and straps around the camera, so you don't get too nervous when handling it, and you can use it safely while being aware of the risk of falling. [Comes with a dedicated storage case, suitable for professional carrying] The attached EVA storage case has a structure that allows the holder and filter to be fixed separately, preventing contact or friction during carrying. Since it can be stored immediately after shooting, it is easy to manage after outdoor use, and I felt that it is convenient for people who want to carry small items together. [Utilize your assets with sturdy aluminum alloy & 58mm professional standard] The aluminum alloy frame has firm rigidity, and I didn't feel uneasy even after repeated installation and removal. Since it is compatible with the 58mm standard, it is somewhat authentic as a smartphone accessory, but I think it is a configuration that expands the range of uses for people who want to stick to shooting.