These filters are an absolute highlight, convincingly good quality, everything fits perfectly, everything is high-quality and securely packaged and safely protected for transport in beautiful cases.

I got this for the filter holder and adapters. They work great!
Mad the filter that came with it is pretty decent.

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.

Super price performance!

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.

The filter does what it should, it extends the exposure time. A Vignettietierung or wrong color reproduction I could not determine so far. The packaging of the filters is very good and practical, some higher-priced filters can not do so well.

Very high quality ND1000 K&F Concept square filter set consisting of glass filter, filter holder and lens adapters for the filter holder.

The package is divided into 3 parts:
1. a bag with metal adapter rings for lenses with different diameters.
2. a box with the filter and its leather carrying case.
3. a box with the filter holder.

The adapter rings allow us to put the filter holder on any lens, since we have a large number of different diameters. They are made of black metal and well made. With inscription on each ring of the corresponding diameter.

It is a square filter ND1000 100x100 mm and 2 mm thick. It allows us to remove 10 light levels to make long exposures in daylight perfect. In the example photo I posted, it is taken at noon at 30 ". I love the play that can be taken from this filter.

The filter comes in a leather case and is covered with tissue paper. The case is sturdy enough to protect it properly.
The glass is not easily marked by fingers and does not attract dust.

The filter holder is metallic, with the part where the filters rest being made of some kind of very hard plastic. They easily fit two 100x100 filters

I wanted a filter holder with these features and an ND filter to start my first steps in long exposure. I chose this brand because I usually like what it offers (and especially for the price it offers, pretty customized)

A sturdy metal filter holder with safety release to put on the adapters and a ND 1000 filter perfect to start taking this kind of photos even in light See in the photos, it comes with a leatherette cover with a soft velvety inside so that the glass and the filter holder do not suffer any damage, although it is presented without cover in the box.

SKU.1878 is a very versatile system and a quality product. The tab filters slide in and out of the holder with ease. So far no light has leaked out. I love that frame for my additional 100 x 100 and 150 x 100 filters get. It keeps fingerprints off the filter.

The company is located in Hong Kong. I would have liked to get extra adapter rings, but K&F Concept doesn't sell them separately, or so it seems. I contacted them through their website/email address and keep getting ads for their backpack. I was directed to get magnetic adapter rings, which are not for this system. It seems if you want to get adapters, you have to buy the filter holder and adapter rings.

This is definitely a product to buy. I look forward to taking pictures with it. It would be nice to have a wide angle sunshade.

I use the product now about half a year, (almost daily) long and am very happy with it!Pro: The installation is easy and holds very well and with the installation rings it is also universally usable for any lens!The filter also keeps its promises and the quality is still excellent!