This is another quality filter from K&F Concept.
The diffusion strength 1 means the effect of blooming is very noticeable even during day time, and very strong glow for light sources at night.

It’s a good way to make your films unique and creative. With a little bit of color adjustment, the filter helps create a magical feel to the footage.

Overall I use it to create dramatic effects for some video production scenes, as well as for personal photos and videos.

For the price, this thing is incredible.Quality is totally fine for the price. The effect is most extreme when the dynamic range is greater, such as bright lights or backlit scenes. It's subtle enough to leave it on my lens and not even think about it. Image quality is great.

did some test shots of my face, I'll spare you the images. I have some sun damage and this filter did soften them a bit which was nice. It also softened the texture of my skin some as well. This filter came well package and with lens cleaners which is a nice touch in packaging. The threads screwed on without issue and I saw no anomalies, color cast or vignetting from the filter. This is a good tool to have for anything we can do to stay out of the time suck of post photo editing the better.

1/8 is the perfect diffusion. takes the edge off without getting all 'ethereal' or unrealistic looking. seems to help with Sony on making the digital feel less pronounced. only weird artifacting you get is at the super wide end, closer to 16mm (full frame) so i don't use it on my 16-35.

Surprised with how good photos turned out with this filter. It creates a nice soft looking images that are well balanced. Have only tried it once at a beach but will definitely be bringing this filter to more places!

K&F is really making some fantastic filters as of late. The build quality on these are excellent. Precision machined brass rings that are thin enough not to interfere with the image but strong enough to protect your glass. They screw on very smoothly and the brass will prevent stripping and cross threading. The optical quality of the glass is excellent. There is no distortion whatsoever and the mist filter gives your images a very subtle dreamy quality. Something really impossible to do in Photoshop or with digital editing in my opinion. You get the realism and quality of an actual optical effect, and these look absolutely beautiful. Some people may disagree but I always prefer doing as much as you can in camera to eliminate the need for post processing. And of course for video it’s definitely a timesaver. Applying this subtle mist effect digitally in video is very processor intensive. This is a nice little way to soften the features for portraits and I decided to take a portrait of this little fellow. You can really see the difference around the eyes that the filter makes in addition to the fact that it was really bright and this filter helped soften the shadows. This is a 1/4 Mist so the effect is very subtle. Don’t be confused by the name black diffusion. This filter will lighten your images by reducing contrast and softening highlights. It actually lightens up the image a bit but in a way that doesn’t create blurriness. That’s the beauty of genuine optical filters rather than digital post processing effects. This is comparable to my German filters that I paid a lot more money for in the past.

Very dense black diffusion filter - great for adding soft character to a very sharp sensor and lens. K&F makes a great product, solid packaging, and excellent glass.

I love this. It gives a beautiful glow to lights, being a lover of film and cinematic looks, this is perfect. I got the 1/2 for those interested.

I have used this brand of lens in the past with zero issues. This lens works just the same. It spins on without any problems and can be rotated freely.

Awesome fit, clean. Have them for all my lenses!