Whilst my main camera is an iPhone 15 Pro Max which I use with a cage that has dedicated mounting for filters, I occasionally like to take my iPhone SE2022 for an airing so ordered this to allow some control over light when shooting.
Unfortunately it seems the iPhone is far too small to allow the mount to clamp on without a relatively thick case, something I prefer not to use as I like the tiny form factor of the phone.

Fortunately ny wife, who is also a photographer, was more than happy to claim this for herself and she had no such issues attaching it to her POCO.

The filter performs as one would expect a K&F product to, no visible vignetting or X in use across the various stops.

I used this with my iPhone 15 Pro Max, and it's such a fun little gadget for exploring the world around you. The magnification is impressive for its size!
I took a zoomed-out shot of a chair and then zoomed in close, and you can really see all the fine details.
It seems like it would be a great tool for checking out jewelry too. I let my son use it, and he had a blast walking around and finding things to examine up close. The built-in light is a nice touch, and you can adjust the intensity, color, and warmth of the light, which is super handy.
Overall, I’d definitely recommend it! The manual is also clear and shows you exactly how to line it up with your phone.

Very good filter system with the most common filters you need. I use this on an iPhone 15 Pro Max using a filter holder for taking pictures and filming. Thanks to the excellent magnetic adhesion, the filters sit firmly on the holder, but are still easy to change in seconds. The image quality is not negatively affected by the filters and is fantastic overall. The price-performance ratio, especially in the set, is great.

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.

I bought this to put on a slider, works great. Will probably end up getting on of their tripods.

This mic took my videos to a level I didn't know was possible. I'm not sure how I allowed my self to record with my iPhone mic or my pc mic. The best part is not being stuck to one place in order to be heard. Instead I can walk where ever I like as close or as far from the camera as I like and I'm still heard the exact same way since it's wireless.

I was a bit intimidated by all the stuff that came with it thinking it would be tough to figure out but It was SOO EASY to setup on my DSLR and even easier for my phone. It's literally plug and play, I didn't have to change any settings anywhere. I love that it comes with 2 mics incase one dies or if I have a friend in the video with me. The charging case is also a big plus. To be fully honest, I fell in love with this before buying it and now that I have it and saw that it exceeded my expectations It has given me the confidence to make content!

Pros:
Flexibility
Compatible with both iPhone (lightning port) and android (USB-C)
Works with DSLR
Long battery life
Included filters
2 Mics
Charging case
came with a little carrying bag

Cons:
I only have one and want another

I have a cage for my iPhone 15 Pro Max and 14 Pro so am able to fit screw on filters but my lowly but much loved SE has no such luxury.
This meets that need with the added bonus that I also have a whole bunch of lenses that take a 52mm thread filter too

I have my iPhone in a protective case and the clamp is large - so easily grips phone without need to take out of otter box case. I have been photographer for years and have handled lots of equipment - and this is very well designed and constructed. After I order I was worried maybe I tried to buy cheap product - but now that I use it - I am so happy with quality and low price! The bluetooth set up was super easy. Battery was already installed and it took about 30 seconds to read instructions and sync shutter button.