I recently purchased the K&F Concept ND filter for my Sony FX3, and it has quickly become an essential part of my gear for video. From the moment I unboxed it, I was impressed by its sturdy build quality. While it’s slightly heavier than other filters, this added weight contributes to its durability, making it perfect for demanding shoots.

Mounting the filter was seamless, and I was pleased to find no vignetting issues, a common problem with ND filters. The filter performed exceptionally well in the bright, high-altitude conditions of the Peruvian mountains. It allowed me to shoot wide open in intense daylight without overexposing my footage. The color accuracy was spot-on, with no noticeable color cast, saving me time in post-production.

The metal frame and smooth threading make the filter easy to use, and the multi-resistant coating effectively reduces reflections and glare, which was particularly useful in harsh sunlight. It’s also easy to clean, which is a huge plus in dusty or wet environments.
In summary, the K&F Concept ND filter is a high-end accessory that pairs perfectly with the Sony FX3. Its excellent performance, durability, and flawless integration make it a worthwhile investment for any serious videographer, especially in challenging environments like the mountains.