Great product! Better build quality than my Tiffen, and no nasty color cast.

These is my 2nd variable ND from K&F. The quality it's good as Tiffen and others manufacturers. Instead of have a lot of ND of different sizes it's better have a variable ND for my photography work and save same money.

The only CONS it's the protective case that came with the ND. It's nice but too big.

Outstanding product! Better processing quality than my Tiffen and no bad color cast.

K&F Concept easily adjustable ND filter. The display on the outside shows the area in which the ND filter is set.
The filter can be easily rotated onto the lens because it has a good grip on the outside and is also easy to disassemble.
With the ND filter, long exposures can be carried out very well in daylight.

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 both a tiffen vari ND and this one. And I like this one even better! My tiff filter has a slight bluish tint and it doesn't even turn too far. I also like that it has a hard stop and therefore doesn't have any x patterns. Quite the opposite of meeting.

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.

I have both a tiffen vari ND and this one. And I like this one even better! My tiff filter makes a slight bluish tint and this one, even turned too far, does not.
I also like that it has a hard stop and therefore no x patterns. Quite the opposite of meeting.
In addition, the k&f filter can filter out almost 1 1/2 stops more light than the tiffen, without a vignette.
If I hadn't already bought the Tiffen I wouldn't have it in my camera bag anymore. So he lies around and is no longer used.