The "K&F Concept Nano-X PRO ND Filter 77mm Variable Gray Filter ND2-32 (1-5 Stop) Neutral Gray Filter" is delivered in its original packaging.

✅ The workmanship is very high quality to match the filter AND has a sustainable idea and implementation. The interior can be used as a picture frame, which I think is very successful.

✅ The filter is delivered packed in a very sturdy leather bag. A carrying strap is sewn in so that you could easily wear it on your wrist if you wanted to. A microfiber cloth is also included.

✅ The filter itself is really high quality and feels the same. A sturdy and good metal frame with a decent feel. However, there is no surrounding structure compared to the K&F ND1000, but there are two small handles.

✅ The variable gray filter darkens the image by 1-5 stops, which is okay, but is almost too low for long exposures. I was also allowed to test the ND1000 filter, which stops down 10 stops, which makes a huge difference. I didn't notice any aberrations or uneven progression.

✅/⚪ There is an end stop for ND2 and ND32, which I think is successful. Unfortunately, there is no haptic feedback once you have reached a stop. That would have made perfect sense.

⚪ Another thing I would have liked is a sturdy box in the carrying bag. No matter how well and attractively the leather case is made, the filter is not protected against dust and external forces. You shouldn't skimp on it, especially with such a price-intensive filter.

Overall, a really high-quality filter for a corresponding price of just under 300EUR. Whether you want to and have to spend that much remains to be seen. I'm missing a small box and the price could also be lower compared to the K&F ND1000 - variability or not - which is why I give it a solid 4 stars overall if you have the appropriate budget in your pocketbook and can get by with the 5 aperture stops.

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