I received the new X-PRO filter set today and have already tested its applicability in the apartment. A judgment on the quality of the filter glasses and the combinability in a shot I still deliver ... The supplied box holds the holder + adapter rings + CPL + ND 8/64/1000. At the drawstring you can pull out the compartments and then very conveniently remove the filters. The plastic filter frames are decently sharp-edged, but not unpleasantly so, and allow you to remove and handle the filter without having to touch the glass. The tabs on the frame also make it very convenient to pull the filters back out of the holder, especially in any order. I have ordered two empty frames in 100 X 150 on the manufacturer's site, which should take my graduated filters after receipt, which I have from another manufacturer. I am curious how well this will work. If it works out, I'll have a complete system for myself, with CPL, three ND filters and two graduated filters (Soft 0.9 and Reverse Soft 0.9). Sliding the filters in and out of the holder requires some force, but is neither awkward nor imprecise. This will then also allow the graduated filter to be aligned well. The handling of the CPL filter with the insertion bracket is great, the turning mechanism is a bit rough, but precise. Screwing the adapter rings onto the lens goes very well, the threads are cleanly made, nothing rubs. Attaching the holder to the adapter ring is also a pleasure and the existing locking screw is very welcome, as the holder can be rotated relatively easily on the ring. The handling of the system has already convinced me, with "only" two slots I can live well for my needs and I look forward to the first use, in the next few days, in the great outdoors and with cold fingers. I have so far worked with round screw filters and waived graduated filters, which I now want to change. I also looked at the system from Rollei (Mark II), which can not keep up with the X-PRO from K+F in handling. Everything very flat and fiddly, offers little surface for holding and joining the parts. Getting the polarizing filter or adapter ring out of the holder again is no fun and almost impossible with cold fingers. K&F has solved this much better. Who wants to use graduated filters is very well served with the X-PRO set, who only needs gray filters, I would advise a magnetic round filter set, whose diameter is well above its largest lens, which is even faster to use, is more compact and should then not darken with several filters in parallel.

Great filters for Mini 3 Pro. My favorite thing is that they stick to the gimble, they don't just slide over them even though you get 6 different colors from ND4 to ND1000 and they come in a protective case. They feel very good. The set even includes a set of mini 3 propellers, very happy with these ND filters

My review refers to the following product, which was made available free of charge as part of a product test:

K&F Concept Mini 3 Pro ND Filter & Polarizing Filter, 3-piece ND8, ND16, CPL Filter Compatible with Mini 3 Pro（Accessories：8*Mini 3 per propeller）

This Filter set consists of the following scope of delivery:

- 3 filter attachments (ND8, ND16 and CPL filter) in a padded transport box
- 2 propeller sets for Mini 3 Pro consisting of a total of 8 propellers
- a small screwdriver for mounting the propeller

Quality and handling of the set:

The Filters are stored in a padded, transparent plastic box and are therefore well protected against damage or dirt during transport.
The filters themselves are very well made and sit perfectly on the Mini 3 Pro gimbal. They are easily assembled. First you carefully turn the original cap of the gimbal anti-clockwise and remove it. Then you can put on the desired filter and lock it in a clockwise direction. The filters are printed on their frames with fine white lettering "Nano-X CPL" "Nano-X ND8" or Nano-X ND16" and are therefore very easy to distinguish.

The glass filters have a metal frame, yet they are extremely light (only 0.7 grams!) so they do not negatively affect the weight of the drone.
They are dustproof and waterproof, so they reliably protect the gimbal camera just like the original cover.

The two neutral density filters (also called gray filters) included in the set reliably reduce the light intensity that hits the sensor chip of the drone camera gimbal. This allows beautiful effects to be achieved when taking photos and videos.

The ND8 filter lets through 1/8 of the incident light, the ND-16 filter only 1/16 of the incident light. Beautiful effects (blurring, etc.) can be achieved with the exposure time.

The polarizing filter from K&F, on the other hand, ensures that reflections are reliably reduced. For example, in buildings with windows or on water surfaces. The polarizing filter also makes the green appear richer. This is particularly noticeable when filming or photographing forests or meadows. Even shots of the sky draw it much better. Since the Mini 3 Pro can pan upwards with the gimbal, great pictures of the sky are possible with the attached K&F polarizing filter. The K&F CPL filter can also be adjusted by adjusting the scale on the filter.

The enclosed 2 sets of propellers should enable a very low-noise flight when used. Since they don't differ much from the original in terms of appearance or construction, I keep them as a replacement.

Conclusion:
All filters in this set from K&F do their job very well depending on the area of ​​application and are easy to install or change. Therefore a clear purchase recommendation.

I rate the product 5 stars overall.

Thank you for reading my review. If the review was helpful for one or the other, please click on the "Helpful" button.

My set of Mavic 3 Classic ND filters attaches easily and comes with a neat protective case. Testing the ND64 filter I got a noticeable 1000K Cool/ 2% Green tint color cast, but the spectrum transmission is smooth so it can easily be corrected in post. The sharpness is good. Overall happy with the filters, especially for the price.

The K&F Concept ND filter set is rated in ND 8, 16, 32 and 64 for DJI Mavic 3 Classic.

The filters come in a small plastic storage case. Inside are the 4 filters, embedded in a foam rubber mold. Thanks to the foam rubber, they remain reliably in place and are well protected from scratches.

The filters themselves consist of a metal frame and tempered optical glass.
They are included in 4 different strength classes. For most purposes, the filters should be sufficient to be able to increase the shutter speed of the drone as desired, thus creating a cinematic motion blur in the image. Or simply to be able to correctly expose the image.

The filters have a very good workmanship. They fit the drone's lens with millimeter precision. The closure of the filter holder snaps gently into place. The filters can also be easily turned down again.
I really like that the filters are made of metal. In addition, one weighs just 8g, which does not change the flight characteristics of the drone.

The compensation is excellent, the filter has no color cast.

Conclusion
In my opinion, the K&F Concept ND filter set is a very good product. The filters are cleanly processed + the set is thoughtfully put together. Long exposures with ND256 or higher filters will not be done from the air anyway, so I think the ND 64 is the all-purpose weapon for very bright environments or very long shutter speeds for motion blur.
At the time of my review, the price of the filter set was around EUR 50, which in my opinion represents an excellent price/performance ratio.
So I'm giving it 5 stars and I hope my review was helpful.

The Mavic 3/Mavic 3 Cine Drone variable ND filter is well made, easy to install and use, and nicely packaged. Compared to filters bought on other platforms, K&F does a great job!

The K&F Concept ND filter set is compatible with the DJI Mavic 3 Classic. The set of 4 includes four ND filters (8, 16, 32 and 64). The workmanship is of high quality and the attachment is very quick. With the filter set you are actually equipped for almost all eventualities (regarding the influence of light and weather conditions). You can shoot great videos or take pictures that are much better in terms of quality, color and light play than without a filter.

I'm pretty impressed with these ND filters. First off, the build quality is pretty good...metal frame and glass construction, as opposed to the cheaper plastic versions (that I've had before). The picture quality is great in my opinion. Check out the short video for yourself. Shot on Mavic Mini (original) with ND32 filter 1080p at 30 fps and ISO 100. I also have another brand (Freewell) of ND filters for my Mavic Air 2 and I find that they work just as well as this one (obviously different drones... but compared to image quality) and are a bit cheaper. These install easily and stay on securely. I would definitely recommend these.