I had a few individual filters with me occasionally. But it was often too expensive for me to fiddle with it in nature. Screwing the filter together to obtain further adding gradations is also fiddly. There are enough individual ND filters, but each time you had to change the filter again...

With this filter here, you basically trick the entire handling process. I hadn't even found out that there was such a thing. That's why I've included a small video so that you can see the function. Even though “only” ND2-32 is available here, you can still see what these products can do.
Especially for experimenting, a matter of seconds, sometimes using a different filter setting. With low filter strengths, the automatic camera is also sufficient and you can see the current shutter speed when adjusting the filter. In this way, soft water structures can be created with relatively bright light or soft clouds in the sky, etc.pp. I didn't really notice stray lights or reflections, but I'm reworking something like that on a PC anyway.

The price of this product is high, but considering that it covers several filters at once, it's not too bad. However, the general question is what kind of filters do you really need. I've had an ND8 and an ND1000 so far. Sometimes an ND 4000 would have been required (to safely create “deserted” objects/spaces).

However, I find the concept here really innovative and practical.

Anyone who likes photography knows what you use an ND filter for. Since my attention is the landscape photography I can not avoid working with such filters. I ordered this one from K&F for my full frame camera.

I was just tired of filling my backpack with ND filters of different strengths. So the Nano-X Pro came in handy. To use it on several lenses I ordered it in the size 77 mm. I then work with step up rings to be able to use it on smaller lenses.

To say it right away: The optical quality and the quality of the images has flashed me! The workmanship is excellent and very successful. The lens thread is top clean cut.
The filter is adjustable from ND 2 to ND 32. The larger steps (f stops) are marked on the ring and easy to read. It can also only be turned in this range of 1-5. Below or above it does not work. So you always know by the stop what you have set.

The 77 mm. Ring brings 93 gr. on my kitchen scales. Everything is solid and feels very good. The setting runs well with slight resistance. So it should be.

The optical quality is absolutely flawless and even in difficult lighting conditions the filter delivers top. Chromatic aberration or color gradients into the green, magenta or anywhere else I have not been able to determine even when pixel peeping. Even with foliage or firs in backlight and with reflections from dew, the quality of the filter is unsurpassed. Finally a ND filter that does justice to my limited lenses and the full-frame sensor. The frame thickness with thread is only 9 mm. Without thread 0.63 mm. So you can use the filter on wide angle lenses without edge shading.

Thanks to the two screwed brass handles and the ribbing of the ring, the filter can be adjusted very sensitively.

Conclusion:
K&F Concept has delivered a top filter here. What good is it if you put thousands into lenses but then bad filters make the work difficult or lead to lousy results? From me clear 5 stars+. I hope this is useful for your purchase decision. Also the price is relative because you save at least 4 ND filters.

I've used K&F ND filters in the past, so I wasn't surprised at the quality compared to newbies. The filters enable sharp focusing without restrictions. Thanks to the really extremely thin glass and frame, there is no clouding or dark spots around the edges. It is ideal that the filter has a thread on the front, so that you can easily mount several in a row. The frame has small brackets so that you don't have your fingers in the picture when readjusting. The ND Filter 67mm Set is rounded off by a beautiful leather storage case. Overall absolutely great!

occasionally carried a few individual filters with me. But it was often too expensive for me to fiddle around with it in nature. Screwing the filters together to get further addition levels is also fiddly. There are enough individual ND filters, but every time you had to change the filter again... With this filter here you basically trick the entire handling process. I hadn't even found out such a thing existed. So I included a little video so you can see the function. Even if there is "only" ND2-32 here, you can still see what these products can do. Especially for experimentation, a matter of seconds, sometimes with a different filter setting. With low filter strengths, the camera automatic is sufficient and you can see the current shutter speed when setting the filter. Soft water structures with relatively bright light or soft clouds in the sky etc. pp. I didn't really notice scattered lights or reflections, but I edit something like that on the PC anyway. The price of this product is high, but considering that it covers multiple filters at once, it's not too bad. However, the general question is what kind of filters do you really need. I previously had an ND8 and an ND1000. Sometimes an ND 4000 would have been required (to safely create 'abandoned' objects/rooms). However, I find the concept here really innovative and practical.

The K&F Concept filter arrives safely packed here. It comes with a duster and bag for storage. The processing of the filter is really first class. High quality materials, excellent handling, perfect fit and not too heavy on the lens or in the hand. The filter is simply attached to the lens using a rotating mechanism. The filter conjures up wonderful images that you no longer have to edit. The price is certainly a deterrent - but in my opinion you get one of the best filters on the market. Professionals MUST strike, amateur photographers CAN strike without hesitation