This K&F Concept Clip-On 67mm CPL Magnetic Phone Lens Filter Kit is very easy to use and fits over my iPhone camera perfectly. However, it may not work for other phones with different camera configurations. The filter does help significantly reduce harsh reflections, but I’m not very impressed with its ability to deepen and enrich blue skies. It comes in a nice protective case with a microfiber lens wipe as well. Unfortunately, this is not a rotating circular polarizer like the ones they make for DSLR cameras. On the plus side, it does have a magnetic mount, so it’s easy to adjust and swap out with other filters as needed.

This K&F Concept clip-on 67mm CPL magnetic lens polarizer filter kit is compatible with my iPhone 12 Pro. It’s very easy to use, simply clip the base on to your iPhone, twist the screw on the base to tighten, and then attach the magnetic lens filter to the attached base. With the magnetic adapter ring, the lens filter can be quickly removed, then redeployed, if necessary, without necessitating removal of the entire clip-on base piece. The clip-on base and magnetic adapter ring are also compatible with various other K&F Concept magnetic lens filters, so that’s a plus if you’re already using other K&F Concept lens filters. There’s also a top cold shoe for an additional light, or a microphone.

This K&F Concept kit includes a clip-on base, a 67mm CPL magnetic polarizer lens, a carrying case, and a cleaning wipe. The overall quality of this kit is excellent, certainly above average. This K&F Concept filter kit fits my iPhone 12 Pro perfectly, the locking knob feels secure, and it didn’t cause any damage to my phone. This lens filter does extend slightly beyond the edges of my iPhone, at the top, and on one side, but the design helps filter out light.

I’m using this K&F Concept lens polarizer filter kit primarily for outdoor beach photography. I desperately needed something to help reduce the glare and reflections that I had been capturing in my beach photographs. I’m very satisfied with this K&F Concept lens polarizer filter kit, it has worked very well for my purpose. At around $35, this K&F Concept lens polarizer filter kit is a solid value, an option definitely worth considering. Highly recommended, especially for beach photography!

This ND filter was developed specifically for the iPhone. This should be taken into account, otherwise the verdict will probably not be so favorable. The special thing about it is that this ND filter with its filter ring completely encloses the camera module of the newer iPhones. The actual filter then lies directly on the lenses and sits really well.

Unfortunately, this doesn't work with a cell phone case that has a camera protector. Then the camera module becomes too big and the filter no longer fits over it.

The whole thing is held in place with a fairly tight clamp, which of course then covers part of the display. But in my opinion that's not particularly important.

The filter can be adjusted from filter strength ND2 to ND400 by simply turning it. The whole thing is done with a quarter turn, so all levels are pretty close together, so you should turn slowly. There is a 10-level division on the ring, but it can still be adjusted continuously. The filter does not always have the same effect on all three lenses. With the ultra-wide angle of the iPhone 14pro, for example, you can get the filter ring in the picture with some settings. In some settings you notice a slightly stronger vignetting. You have to try it out a bit, but you can get the hang of it quickly.

Who needs something like that? Certainly no one who doesn't know straight away what an ND filter does. The product is aimed more at photographers who want to get even more out of the iPhone and, especially in bright light, still want to use long shutter speeds. To do this, you would have to delve a little deeper into the subject. There are numerous, very good YouTube videos on the subject...

I think it's really great that the filter holder or clamp with a 52mm thread can also accommodate other filters. A polarizing filter or graduated filter would be exciting here for different effects.

In any case, I am very happy with this ND filter, even if I probably won't use it that often. I tend to take the photos or videos that can be produced with it with a system camera. But if you're travelling light or want to experiment with iPhone photography, this is the right choice. The price is unbeatable for this great quality.

Darkening filter lens with clip to attach it to the iPhone (works on all models).
The lens can be unscrewed, it has a 52mm thread and can also be inserted on some Canons.
Useful in case of direct exposure to the sun, otherwise the iPhone will be able to adjust the brightness independently without any problem. I really like the effect that is created when you overcome the darkness of the lens, creating these blue-purple edges.
If you also own a reflex it becomes a valid purchase also in economic terms.

Use it with a gradient ring for my iPhone 24 Pro Max with a beastcage

Using it with a gradient ring for my iPhone 24 Pro Max with a beastcage

This is the best ND solution I have found. I am using an iPhone 11. The filter attaches easily and the clip is firm. The filter is so easy to adjust and I cannot fault its operation.

The smartphone lens filter from the K&F Concept brand impresses with its excellent workmanship and quality. The variable ND filter, which is easily and securely clipped onto the iPhone lens using a clip, is particularly impressive. This innovative approach makes it possible to use the advantages of a professional ND filter on the iPhone as well.

The filter is extremely easy and intuitive to use. The clip holds the filter firmly in place without slipping, which enables uncomplicated and quick installation. This is particularly practical when you are on the move and need to react quickly to changing lighting conditions.

Another plus point is the photo quality, which is not affected by using the filter. The images remain clear and sharp and the effects of the variable ND filter are well presented without color distortions or other unwanted artifacts. This makes the filter ideal for anyone who wants to take high-quality photos with their smartphone.

Overall, the filter offers an excellent way to improve the flexibility and quality of smartphone photography. It is easy to use, well made and ensures that the photo quality always remains at a high level. A clear recommendation for all smartphone photographers who want to expand their creative possibilities.