The award goes to this product for the simplest idea that really helps in the field.

I've never seen one of those magnetic filters, I'll be honest and I usually leave the standard filter on the lens most of the time because it's too annoying to change filters. Usually that means the picture isn't as perfect as it could be and just fix it in post.

Well, those little snappy things changed all that. It's now effortless to change the filter, and even better, I can now do it between shots without having to reset it.

I use this filter for video to get the right shutter speed regardless of the aperture. A variable ND filter is of course perfect for this. I can't see any loss of sharpness or similar, but as expected there is a slight, hardly noticeable color cast, which you can easily correct - if you want - on the camera.

Super handy for individual storage
Good protection with the cover
Holds up well

With these filters, K&F Concept offers those who practice amateur photography excellent equipment suitable for various types of use.
I've used them with my Sony mirrorless kits with no problems.

This magnetic filter set is just great!
A small plus is the presence of the storage bag, which allows you to transport everything well without damaging it. It's also waterproof and small enough to clip to a belt!
The quality is excellent, each piece is individually wrapped in moisture-proof packaging.
Once in place, you can leave the adapter ring as it will not interfere with the cover installation.
Then simply place the magnetic filter of your choice and you're done.
The effects are great, beautiful and high quality.
The fact that everything is magnetic is a real time saver!

Excellent set of magnetic filters for 67mm lenses, the quality of the product corresponds to the description They are supplied in a sturdy bag

So far the processing is very good. Looks like a very noble product with good quality. Haven't tested it in practice yet and will adjust my review then.

Fast delivery, filter keeps what it promises, top
What does an ND filter actually do? ...
If some should ask themselves that.
Quickly and roughly explained ---- little basic knowledge.
First and foremost, an ND filter reduces the incidence of light and so you can still film in very bright situations, for example. Without totally overexposing the recordings. So also a longer eg. shutter speed possible. Who doesn't know the great pictures of streams or waterfalls, where the water looks like a veil, like in a dream world. You get that with a good ND filter and exposure time, for example, and not, as some people think or suspect, with good Photoshop skills.
I work a lot on the water, on the beach, on the sea, and that's how I always get the water nice and smooth. And above all, since I have put down my roots in southern Europe, it is logical that I often have to struggle with a lot of sun, often more than desired, all year round and of course an ND filter is a must I almost would want to claim…
Well, just to mention a few small applications or possibilities.
With this filter you get very good image sharpness and color neutrality. There is no yellow cast like on many other cheap and often expensive filters. I already said about the X-Pattern and the IR Cut.
Conclusion: All in all, a filter that is worth the money and very manageable when you consider what you get for it. Clearly, on the whole, a satisfactory round package. Great for the price, you don't waste any money buying this filter.

For filming with DSLR. I find the processing good. No "X" pattern, I'm satisfied
I knew as soon as I opened the envelope that I had bought a quality item. The beautiful black outer packaging contains a round acrylic container that can be opened at the push of a button. The filter rests on its foam bed. It looks like quality, it feels like quality.

Anyone who shoots video with a DSLR knows the camera settings and their limitations in brightly lit environments. This can become a bigger problem if, like me, you like to shoot wide open on a fast lens. On brighter days it was almost impossible to take pictures outside. To say I am very satisfied is an understatement.

Pros:
High quality, no dreaded X's or aberrations. I expected a lens of this quality to cost a lot more.

Cons:
To be honest, there aren't any. No, I can't put the lens cap on with the filter in place, but unscrewing it and putting it back in its case is no problem.

I'm just an amateur filmmaker so my word doesn't stand for photographers. However, from a filmmaker's perspective this is a great kit in the bag and for the money you can't go wrong.

Price / offer: Very good. I needed this item for a music video that I produced in Mallorca. Being able to take very nice pictures despite the glaring sun. Music video turned out very nice. The part should not be able to do more and has completely fulfilled my expectations. You just have to make sure that you don't turn the nd filter completely to the maximum so that you don't lose quality.