I bought the K&F Concept Nano-X PRO series ND1000 77mm filter for my photography equipment and am impressed by the quality and performance of the filter.

The frame of the filter is made of high-quality brass material and features a CNC pattern design, which significantly improves hardness and flexibility. The installation was also very smooth and durable.

The ND1000 filter reduces light by 10 stops, allowing longer shutter speeds without a color cast or loss of image quality. The K&F Concept coating technology also gives the filter a very low reflectivity of 0.15%, which increases light transmission and reduces stray light and ghosting.

The filter also features a 36-layer double-sided nano coating that is waterproof, dirt-proof, and scratch-resistant, which improves the durability of the filter. The frame is also very thin and fits the lens well without creating dark corners when attached to wide-angle and telephoto lenses.

In addition, the filter comes with a high-quality leather storage bag, which is purely handmade and was specially produced for K&F Concept photographers. The flagship filter from K&F Concept meets the highest internal standards and offers excellent optical performance. The classic high-end design and exquisite workmanship make it a valuable addition to any photography equipment.

Overall, I would rate the K&F Concept Nano-X PRO series ND1000 filter with five out of five stars. It is of excellent quality and performance and offers excellent value for money.