K&F Concept 67mm 可變ND濾鏡 ND3-ND1000

The ring turns smoothly, making it easy to dial from light to very dark without shifting the focus. I got a nice 2-second exposure on a bright afternoon, and the image stayed sharp across the frame.

I was able to smooth out a waterfall perfectly on my first try, which really showed off the filter's versatility. The ring turns smoothly from a light to a very dark setting, making sunlit scenes easy to manage.

I was pleasantly surprised how easy it is to dial in the exact density from ND3 to ND1000 just by twisting the ring, makes shooting video in changing light a breeze. The filter itself feels solid and doesn't add much extra weight to the lens.