This filter from K&F concept works exceptionally well, as K&F already has lot of great products and this is also another good product.The filter polarises the light and can clearly see it eliminate the reflections. Filter can be rotated to control the amount of polarisation. And the lens ia big enough to cover all 3 camera on an iPhone 16 Pro Max.The filter is made of very good quality with glass lens and metal frame, as it feels very premium.There is a provided travel (harden) case which protects the filter as well as a cleaning kit is also included.The clip that attaches to the phone is made of plastics, it’s sturdy but I am not sure how long it will last for, as the clip presses on my phone screen and this is why one star is knocked off.

I tried this kind of filter for the first time, and I was worried that I wouldn't be able to install it, but I was able to use it without any problems. It can be attached securely, so I think it's easy to use. I had this kind of filter on my single-lens reflex camera, but when it comes to being able to be used on smartphones, the fun expands.

This is a quick and easy filter kit that makes it possible to use slower shutter speeds or wider apertures in bright sunlight, perfect for creative effects like smooth water. To get the most out of it, your camera needs to be in Pro/Manual mode - in Auto mode the phone simply compensates by raising ISO or altering shutter speed, cancelling out the effect.When used properly, I’ve had excellent results. The variable ND ring rotates smoothly and confidently, with firm stops at ND2 and ND32 so you always know your position. I much prefer this to filters that spin freely. The glass quality is very good, offering clean, controlled light with minimal glare or distortion.The universal clip works, but it feels a bit clunky and isn’t ideal for certain camera placements. On my Samsung, where the lens sits at the top corner, the clip attaches at an awkward angle. Phones with large camera bumps or cases thicker than about 10 mm may also struggle.That said, when paired with the Xiaomi Ultra 15 Photography Kit and its dedicated 67mm attachment ring, the filter performs beautifully. The optics are clear, the adjustment ring is precise, and overall the results are excellent.In short: the glass and performance are exceptional; the clip attachment is functional but not perfect. Still, it’s far better than budget “clothes-peg style” clips thanks to its perpendicular fit and cushioned grip that protects the screen.

A simple design that just workedI love taking pictures of sunsets over the water, this filter will help me reduce glare and get those expert style photosThe only downside I have it is my iPhone has a case on, and the clip is difficult to clip on with the case on my phone, it does fit but very snuggly.Excellent quality, I’ve had a few lenses from this brand and accessories for various products and they all scream top-quality

It is an item that allows you to take fantastic photos and videos even with your iPhone with a variable ND filter. Since it is a product made by K&F, a long-established camera accessory manufacturer, it is exquisitely made and has a satisfying finish, including texture. Modern iPhones are really amazing, and they produce beautiful images that are second to none compared to digital single-lens cameras. Since it is a variable ND filter, the brightness can be adjusted freely, making it ideal for shooting snowy scenes. While suppressing reflection, it follows up on itchy areas that cannot be compensated by shutter speed. Easy to carry with just one touch with a clip. It's also nice that it doesn't feel bulky even if you store it when not in use. It was a recommended item for people who mainly do iPhone photography.

This filter can be used with both a clip and a camera lens, which is very convenient. I really appreciate this high level of versatility. Another nice point is that it comes with a sturdy case where you can keep everything you need together. The filters and clips themselves are of sufficient quality for everyday use, but there are separate products with better magnetic attachments for MagSafe compatible iPhones. Therefore, I will use a different magnetic adapter for the iPhone, and I plan to use this clip for Android. This is perfect for my use.

K&F CONCEPT's variable ND filter (67mm) was an item that expanded the range of expression to such an extent that I couldn't think of shooting with a smartphone. ND2 to ND32 can be adjusted with a single image, making it possible to express expressions that were difficult with conventional smartphone cameras, such as waterfalls and river flows during the daytime, and light trail photography of night scenes. There was little color coverage, and thanks to the nano-coating, there was almost no deterioration in image quality. The clip, which can be attached with one touch, is also very convenient, and can be fixed without putting stress on the smartphone. It's also lightweight, making it perfect for shooting on the go. The silicone pad prevented slipping, and I was able to use it stably in both vertical and horizontal shooting. Since it is compatible with the 67mm standard, the fact that you can make use of your camera filter assets on your smartphone is also attractive. Recommended for those who want to rank up their smartphone photography.

A simple solution to bring down your shutter speed when shooting video outside.Also good for long exposures in the daytime as well.Simple and easy to use.The good quality I've come to expect from K&F with a reasonable price tag to match

I have used ND grad filters for years on my SLR and DSLR cameras. I love scenery photography as opposed to portrait so always looking to sort out the difference in the light between the horizon etc. I live near the sea les that 300m away and walk along the cliffs regularly and don't take my DSLR with me when walking the dogs but always have my iPhone so any unexpected scenes are normally captured using the iPhone. This ND grad filter will come in useful. It fits over the lenses of my iPhone and helps sort out the difference in the light. Once clipped on it is easy to rotate the bezel to the setting you want using your finger. You have to ensure that you do not go past each of the stops or you will get leakage. SO my advise is to check before shooting that you are at the required stop. The other great thing about this filter is that it unscrews from the clip holder and can be screwed onto my 52mm lenses..Bonus... All in all this is a great little filter that I will carry around with me when out walking the dogs. We have a dog walking bag which has Poo Bags and drinking water etc so it sits in the side pocket of the bag in its case. so it is always there if we get a lovely sunset or something really nice to photograph on the sea or beach.. Get little gadget well worth the money highly recommended... As soon as we get anything really nice I will update this with the images...

Hello dear readers,

First of all, I would like to tell you that this product was provided to me free of charge. However, this is not taken into account in my review. I am sharing my "unfiltered" impressions with you. :-)

I tried the filter on my iPhone 15 Pro Max. It is child's play to change the exposure using the rotating mechanism.

As already mentioned here, the filter fits perfectly over the camera lenses, provided there is no cell phone case installed.

Conclusion: Recommended for ambitious iPhone photographers. Price is reasonable given the really outstanding workmanship.

(Price at the time of the test: € 27.49 minus 20% coupon from the promotion)