As an Amazon Vine member, I had the opportunity to test the K&F Concept Nano-X Black-Mist 1/4 filter and I am impressed with the quality and performance of this product. As someone who already owns several products from K&F Concept, I had high expectations that this filter not only met but exceeded. Packaging and first impression: The filter arrived in very classy packaging, which immediately gives a feeling of high quality. Such details are important, especially when investing in professional video equipment. The packaging not only protects the filter optimally during transport, but also makes unpacking a special experience. Build quality and design: The build quality of the filter is excellent. With a thickness of 4 mm, it feels robust and durable. The design is professional and fits perfectly with my 4 x 5.65" matte box system. The compatibility and ease of use are big plus points. Outdoor performance: Outdoor shooting is where the Black-Mist 1/4 filter shows its strengths. It delivers excellent image quality and helps control light scattering and soften the overall image. This is especially useful when shooting in strong light or when creating mood images. Video use: As a videographer, I appreciate the subtle but effective effect of this filter. It gives the shots a cinematic look without compromising the naturalness of the image. The reduction of glare and reflections is another advantage that is useful in many shooting situations. Conclusion: The K&F Concept Nano-X Black-Mist 1/4 filter is an excellent addition to any professional video equipment. Its high-quality workmanship, ease of use and impressive outdoor performance make it an indispensable tool for videographers. I can fully recommend this filter and look forward to using it in my future video projects.