The ND filter from K&F Concept is delivered in an elegant black and gold cardboard box. There is also an instruction inside to convert the packaging into a small picture frame. I love this upcycling idea! Inside the packaging, in addition to the actual filter, there is a storage bag made of fabric and PU leather and a microfiber cloth for cleaning. The actual product, the filter, is impeccably processed and appears very stable and valuable due to its weight. It can be easily screwed into the filter thread of my Sigma 16mm f/1.4. I tested the filter with the lens mentioned above on my Canon EOS M6 II. I appreciate this combination for the special sharpness in the imaging performance and also with the ND filter and appropriately adjusted exposure times I get wonderfully sharp pictures with daylight with the intended motion blur . I don't see any falsifications with regard to the colors either, the same applies to chromatic aberrations on 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 little for a filter, but quality at this level has its price.