The “K&F Concept Nano-X PRO ND Filter 77mm Variable Grey Filter ND2-32 (1-5 Stop) Neutral Grey Filter” comes in original packaging.

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

✅ The filter comes packed in a very sturdy leather case. A wrist strap is sewn in so 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 circumferential 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 fixed 10 levels of glare, which makes a very big difference. I did not notice any aberrations or an uneven course.

✅/⚪ There is a final stop for each ND2 and ND32, which I think is successful. Unfortunately, there is no haptic feedback once you've reached an aperture level. That would certainly have made a lot of sense.

⚪ What I would also have liked is a sturdy box in the carrying bag. As good and attractive as the leather case is made, it does not protect the filter against dust and external forces. Especially with such a price-intensive filter, you shouldn't skimp on it.

Overall, a really high-quality filter for a corresponding price of just under 300 EUR. It remains to be seen whether you want and must spend that much. 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 a solid 4 stars overall if you have the appropriate budget in the postage cash and get by with the 5 f-stops.

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