Been a big K&F Concept fan, ever since getting my first tripod by them, years ago. And they seem to be stepping it up a notch, over time. For one, their packaging is beautiful, on their filters and accessories, along with the little protective carry bags for them. It's like opening a box of fine jewelry, and enhances the Buyer's Experience. I like to call it, "Power In The Packaging". Very few manufacturers seem to understand that concept, and K&F gets it. Worse still, are those who give you fancy packaging, to dress up a crappy product. But you won't find that here. The quality matches. And, it's magic.
Still trying to figure out how the heck it does that, the adjustment mechanics, how it fades from clear to black. And, the way it knocks off the bright white reflections and smooths everything over, is amazing. Been in the process of rearranging my studio, and putting it all together, so I haven't produced any content with it yet, but I've tested it on some of my cameras and adapters/lens gadgets, and looked at the monitor, sat there mesmerized, adjusting it back and forth, just looking at it, and I'm in love. Can't wait to get it all set up, and put this and my other K&F filters and contraptions to work!