Square Filter Holder System Nano-Xcelcel Pro Kit (Filter Holder + 95mm Circular Polarizer + 67/72/77/82mm Filter Adapter Rings) for Camera Lens

I was really looking forward to it, everything is packaged beautifully and with high quality, so you can't say anything really great

This is ideal for my photography as I only need one set of filters to fit all my lenses.

bought the rectangular filter set directly from K&F. Since I have worked with screw filters in the past and had the problem with vignetting when screwing several filters on top of each other, I have wanted to buy a rectangular filter set for a long time. Since the sets from NISI, Haida and other well-known manufacturers are very, very expensive, as a hobby photographer I was looking for a cheaper alternative. When I saw several reviews on YouTube, I decided on the K&F set, which is half the price of Haida and CO. I have absolutely no regrets about my decision. The filter holder is very valuable and well thought out. I particularly like how the polarizing filter is attached to the holder and how it can be adjusted using the small wheel. The filters themselves are made of optical glass and show no color cast and are also well coated. Another positive aspect is that the filters have a plastic frame with a tab. This allows the filters to be inserted and removed without annoying fingerprints. A bag is included to store and transport the holder and the filters in it. Also included are various adapter rings for different filter thread diameters. As a landscape hobby photographer, I no longer want to do without the advantages over screw-on filters. I give a clear purchase recommendation for amateur photographers and professionals too! I wasn't expecting such excellent quality for this price. It's amazing what K&F delivers here.

After many reviews that I looked at on Youtube, I decided on the new K&F filter holder and have not regretted it so far. It is easy to use and makes a very high-quality impression. The use of the CPL filter is a great solution. Lever up, put it in and lever down again, done. Adjusting the wheel is also buttery smooth. In contrast to the first K&F filter holder, the filters, which now have a frame, can now be pushed in very easily. Not too easy and not too heavy either. A clear buy recommendation.

I loved the quality of the materials, all metallic. I looked at many kits but they were all plastic and this one caught my attention especially from the comments. The truth is that it was a success because any other similar kit does not fall under 300€.The optical filter nd1000 is made of glass and gives a very good quality. The only thing I noticed is that it loses a little saturation and the white balance is a little bluish, but when processing the RAW it is easily fixed. You increase the color temperature and saturation and you are done!!! (I use a Canon 80d + 16-35 f4 is). I imagine each lens will be different.Attached a few photos so you can see the difference with filter and without filter. Exposure time on the photo with the 30" filter.If you want to start in the world of filters, do not even think about it for this price. Excellent results.

I received the new X-PRO filter set today and have already tested its applicability in the apartment. I'll give you a verdict on the quality of the filter glasses and how they can be combined in one shot... The box supplied holds the holder + adapter rings + CPL + ND 8/64/1000. The compartments can be pulled out on the drawstring and the filters can then be removed very easily. The plastic filter frames are discreetly sharp-edged, but not uncomfortable, and allow the filter to be removed and handled without having to touch the glass. Thanks to the tabs on the frame, the filters can also be pulled out of the holder very easily, especially in any order. I ordered two empty frames in 100 X 150 from the manufacturer's website, which should hold my graduated filters, which I have from another manufacturer, upon receipt. I'm curious how well this works. If it works, then I 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 isn't awkward or imprecise. In this way, the graduated filter will also be easy to align. The handling of the CPL filter with the insert bracket is great, the turning mechanism is a bit rough, but precise. Screwing the adapter rings onto the lens works very well, the threads are cleanly worked, so nothing rubs. Attaching the holder to the adapter ring is also a joy and the presence of a set screw is very welcome as the holder rotates on the ring with relative ease. The handling of the system has already convinced me, I can live well with "only" two slots for my needs and I'm looking forward to the first use, in the next few days, in the great outdoors and with cold fingers. So far I've worked with round screw filters and dispensed with gradient filters, which I would like to change now. I also looked at the system from Rollei (Mark II), which cannot keep up with the handling of the X-PRO from K+F. Everything is very flat and fiddly, offers hardly any contact surface for holding and assembling the parts. Getting the polarizing filter or adapter ring out of the holder is no fun and almost impossible with cold fingers. K&F solved this much better. If you want to use gradient filters, the X-PRO set is a good choice. If you only need gray filters, I would recommend a magnetic round filter set with a diameter that is significantly larger than your largest lens, which is even faster to use, is more compact and should then do not darken with several filters in parallel.

I had been hesitating for a while between several brands to choose a filter holder for ND and GND filters. I took advantage of a flash sale to buy this kit. I am not disappointed.
The whole thing seems sturdy and easy to store.
The case, quite pretty, has 5 compartments, 3 of which, for square ND filters, are lifted by means of a ribbon. On the back of the case, there is a ring to pass a strap and a belt passage. I would have liked a slightly more spacious compartment to accommodate the adapter rings with the CPL filter when it is dismantled.
The assembly (or disassembly) of the elements is well explained in instructions in several languages, including French.

Main positive points:
No color cast, nor loss of sharpness on the first tests carried out.
The plastic frame with its tabs to handle the ND filters.
The system for placing the CPL filter on the filter holder.
the knurled knob for mounting the adapter ring and the rotating housing of the filter holder.
The very accessible wheel for controlling the polarizing filter.
The strong hold of the square filter on the filter holder.
The robustness of the metal filter holder.

Finally found an ND filter which can be installed inside the Smallrig lightweight matte box 2660. I did have to remove the holder frame to make it fit. This can be done by carefully pulling appart the frame sides with the lips. In doing so you can op out the filter while keeping the frame intact. Filter quality seems to be ok and it comes with a very well designed holder with an extraction ribbon which avoids having to touch the surface of the filter when taking it out.

Excellent value for money. Well though out, made and engineered, comes in a nice box, all very well presented. Complete with adaptor rings to fit most lenses. No colour cast that I can see. Im very pleased with the filter kit and have produced good images. Would recommend K&F Concept Pro Square filter set to anyone not prepared to pay silly money for other brands.

I purchased the K&F X-PRO Square system. I've used other filter "systems" and most work as expected. These filters fit for all of my Nikon lens filter of diameter up to 77mm (or actually 95mm on the mount). The material and construction is exceptionally well manufactured and well thought out in its design. The included manual is clear and well written for we English speaking/written folks at least. The adapting rings offer "just enough" purchase for screw mount to the lens, so be patience and carefully on the mounting them... could use a few more threads, I suppose. Mounting the 95mm polarizing (CP) is a snap - insuring you position the proper direction. Of course, you have two different ways to rotate the CP - using the handy knurled thumb wheel or to lighten the locking the full frame and/or from the full frame assemble.

Now, since I did not give you ALL of this products 5-stars for a silly reason. The package and the "Storage Case" is over killing! Beautifully packaged, thoughtfully planned for the full system with space for growth. I/most have their own storage and transport camera cases(s) and most do not fill this beautiful storage case! I would rather have had another filter or a more spartan case for individual filter cases for my camera bag... as a trade for the case! For me, I found another small & padded case, for my new K&F bracket + the CP perfectly for my camera bag. AND I had hoped that the K&F offered properly protected for individual square lens w/frame separately purchased - but not with success.

SO - it's not Perfect for my needs - though almost! Although this is my "first K&F product, I strongly recommend based on my first purchase!