Nothing to say about the quality, they are excellent for the price they have.
05/10/2021
I have been looking for an ND filter for a long time. Thanks to YouTube, I learned about this KF brand. Since I'm a student and can't afford all the ND filters I chose ND 64. I shoot in the woods a lot so I didn't take an ND 1000 because I assumed it was too dark for this time, but the ND 8 allows exposures that are too short. I use the filter from my Sony Alpha 6000 in conjunction with the Samyang F2.0/12mm. The filter does not create a vignette or color distortion for me. Build quality is very high quality, no damages, scratches or sharp edges. The wires run neatly effortlessly and noiselessly. For a student, the ND filter isn't exactly cheap, but it's worth the money.
12/09/2021
For the price of one I now have a well made variable ND filter for all my lenses - I'm very satisfied!
10/09/2021
I used this filter for long exposures, in the presence of water and clouds. Still images stay crisp and detailed, moving parts give the desired effect.
01/09/2021
This filter meets my expectations of amateur photos, no image distortion and neutral in color.
22/08/2021
This ND filter left a deep impression on me, I really didn't expect it to be so useful for video production. I think shooting a video on a sunny day is enough for me.
08/08/2021
I've been thinking about it for a long time, but in the end I decided on a K&F retail filter, which was a lot cheaper, and I really wouldn't be disappointed!
16/07/2021
I bought the graduated filter because it was recommended to me by friends.
05/06/2021