Really nice quality filter, comparable to more expensive brands. Has that black pro mist look. Softens things and gives lights a bit of glow. The he 1/4 does enough but id be curious to play with the stronger versions too.

The K&F Black-Mist Filter is my first filter that creates an effect. I haven't had any experience with this and to be honest I'm very pleasantly surprised. Of course, this can look completely different for someone who already has experience in this area. The filter is delivered in the folding box familiar from K&F. In addition to a plastic box in which the filter is packed again, there are 3 welded-in microfibre cloths to make the filter and the lens dust-free before assembly. What I personally really like is the coating of the metal ring. Filters are often painted very smoothly and are difficult to tighten. A matt and very non-slip coating was chosen here. The grip is further supported by 2 zones with corrugations and you can tighten the filter very nicely and without any problems. It would be whining at a high level if you now wanted to add a better fitting storage box for the filter. There is nothing wrong with the fit and the smooth running of the thread. Therefore I award 5 out of 5 stars.

Finally found an ND filter which can be installed inside the Smallrig lightweight matte box 2660.
I did have to remove the holder frame to make it fit. This can be done by carefully pulling appart the frame sides with the lips. In doing so you can op out the filter while keeping the frame intact.
Filter quality seems to be ok and it comes with a very well designed holder with an extraction ribbon which avoids having to touch the surface of the filter when taking it out.

Perfect pro mist filter.

I bought this filter to test it against the Tiffen brand Pro-Mist and it didn't disappoint. There is a video on YouTube comparing these two filters side by side and the K&F is definitely a competitor. The price is fair which I liked, it also came in a nice container. Don't pay too much for the tiffen in my opinion.

I have a Black Mist Pro 1/8 filter that I use quite a bit, but wanted to try a 1/4 for a more pronounced "bloom" in conjunction with a dream sequence I was shooting. I have the K & F 1/4 Black Diffusion Filter for about 20% less than the cost of a Black Mist Pro so thought I'd give it a try. I have used K&F filters before and have always been happy with them, although they are perceived as lower quality filters by some "professionals". I'm happy to say that the K & F is just as good as the Black Mist Pro equivalent and achieves exactly the desired effect with no distortion or color cast. And if you consider the magnetic docking system, I would say that it's even better than the Black Mist Pro filter (this is the first magnetic filter I've used and I'm hooked). This filer is excellent value for money.

I have the Olympus OM-D E-M1 Mark II which is a Micro 4/3's camera. As such, the lenses are tiny with less glass to cover, making the price of these filters extremely low. So I bought both this K&F Concept 58mm Black Soft Filter 1/4 and the infamous Black Pro-Mist 1/4 Filter. This is all subjective, but I prefer the look of the Tiffen black pro mist more. The K&F is a bit too bloomy, and the image loses a lot of contrast. That makes the K&F less versatile. Meanwhile, the Tiffen is more balanced, with less bloom and higher contrast. Making it perfectly acceptable for everyday use.Given the low price of this K&F filter, I'll still keep it. But, If I had to choose one, it would undoubtedly be the Tiffen Black Pro Mist filter.

Similar to the expensive Pro-Mist filters, this gives videos and photos a more cinematic glow as it adds a slight haze to the image. The 1/8 is lighter than the 1/4 filter size and always has the 82mm thread size as you can get step up rings to fit the filter. The filter gives the highlights a fog-like effect without sacrificing sharpness and also smooths out skin tones. Overall nice filter that fits and protects the camera and is best to have than use a cheap UV filter. The glass won't stick to oil or fingerprints, so you don't have to keep wiping it down.