The ND filter from K&F Concept is delivered in an elegant black and gold cardboard box. There is also instructions inside that can be used to convert the packaging into a small picture frame. I love this upcycling idea! Inside the packaging, in addition to the actual filter, is a storage bag made of fabric and PU leather and a wrapped microfiber cloth for cleaning.

The actual product, the filter, is impeccably manufactured and appears very stable and valuable due to its weight. It can be screwed into the filter thread of my Sigma 16mm f/1.4 as soft as butter.

I tested the filter with the above-mentioned lens on my Canon EOS M6 II. I appreciate this combination for the particular sharpness in the imaging performance, and even with the ND filter and appropriately adjusted shutter speeds, I get wonderfully sharp images with daylight with the intended motion blur. I don't see any distortions in terms of colors either, the same applies to chromatic aberrations in light sources. This filter really only swallows light.

Overall, I can therefore only give 5 stars, the filter and the scope of delivery are convincing. 180€ is of course not a small amount for a filter, but quality at this level comes at a price.