This is a third K&F filter that I own now, and it continues to impress me with the quality and value. This was an unknown brand for me and I can wholeheartedly recommend it to anyone now that I have used three different filters from them myself (UV, CPL, and this variable ND filters).

I am used to caring a set of ND filters with me in a case and I did want something more compact for different conditions. My approach is always to be minimalistic and to carry less. We travel a lot (a lit less now "thanks" to covid) and carrying less gear with me for convenience (and back saving) reasons is always nice. This filter performed superb on my recent trip to Turks and Caicos. We were in many super sunny situations and traveled a lot around the island. I am not a professional photographer but I would classify myself as an "advanced amature" and to my eye this filter is perfect. No color distortion that I can notice, no artifacts that I can see, great range, and convenience of multiple ND filters in one mounted on the camera! It rotates smoothly, stays in place, light, and seems to be very well built. Had it in some sandy conditions on the beach and it held up very well. Definitely recommend checking it out.