This K&F 1/4 black mist filter has impressed me with both performance and build quality. The 0.15% reflectivity makes a noticeable difference in reducing glare and ghosting, especially when shooting in bright light. Images look clearer, and highlights are much more controlled. The cinematic effect is beautiful too. It softens skin tones just enough to give photos and videos a smooth, polished look without losing detail or contrast.

The brass frame feels solid and fits the lens perfectly. It’s easy to attach and remove, and the material adds an extra layer of shock absorption that cheaper aluminum frames don’t offer. The multi-layer coatings are a big plus as well. They keep fingerprints and water spots under control, and cleaning is quick. For anyone who shoots portraits, weddings, or creative video, this filter adds that professional, dreamy touch without much effort. Price is what it is but I am surprised K&F is making great products these days

A Great Softening Effect!

This K&F Concept Black Mist or a diffusion style filter, is a nice piece of glass to take some of the sharpness out of the increasingly high resolution images we capture. I love shooting Hi-Res but like most anything it has its downsides to it, one being it can be overly sharp. Adding this Black Mist filter does wonders to take the edge off of things you want to look best, like your subjects. This does that by creating a smooth and soft look to skin tones making them appear more natural and lifelike. As with all K&F products I own, this is a top quality item, the glass is clear and free of imperfections, and creates an excellent quality image.

I’ve been testing the K&F Concept 72mm Black Diffusion 1/4 Filter for a few weeks now. First, the beautiful exterior box and interior storage bag provide a luxurious feel to the brand. Second, the product itself is quality-made - it feels luxurious. Lastly, although I’m not a photography expert, the filter did seem to soften and improve the photo when there is bright light (see attached "Without-Filter" and "With-Filter" images for a comparison).

A bonus: the product box can be turned into a frame! An ingenious repurposing idea!

I’m still learning the best situations for using the black diffusion filter, but thus far, I am quite pleased with the K&F Concept 72mm Black Diffusion filter.

When you are looking for that slightly soft cinematic look to your footage, you just can't go wrong with a good 1/4 black mist filter. This particular one from K&F is a great example of a good quality one. The optical glass looked great and I noticed no color cast when using it. The look to my footage was really nice. It softened up the digital look of my mirrorless camera and just slightly brought up the shadows.

That being said, I don't think these needs to be almost $140 for the larger 82mm. Around $100 is the right price point for this filter.

The K&F CONCEPT 82mm Black Diffusion 1/4 Filter is perfect for adding a soft, cinematic look to videos, vlogs, or portrait photography. It’s easy to use, fits securely, and the 36 multi-layer coatings ensure no color degradation. The quality of the material feels very solid, and the included storage case is excellent for keeping the filter safe and organized. Overall, it’s durable, reliable, and a great value for the price. Using this filter with a Sigma lens.

High quality 1/4 Black Diffusion mist filter from K&F Concept. It comes in a handy case and screws in easily to a camera lens. Yields softer mist like results when used. Price is rather high but if the filter effect is one you want then it might be worth it. Softens highlights, creates a sort of glow effect, but could also be created in post without the filter IMO. Dreamy and soft, like a vintage lens with some internal haze. This is a quality filter that is nice to have in your arsenal of filters.

I own a few of K&F Concept lenses already and this one adds to it. Fits perfectly. Functions the way it should, that’s even including during my phots/videos. The look is nice. I’ve always loved the way they package their products. It’s worth the value of funds.

Really impressed with this filter. The K&F 1/8 strength adds just the right touch of glow and softness to highlights without going overboard. It smooths out skin beautifully and gives highlights a subtle cinematic bloom that instantly levels up the look. Build quality feels solid, it threads on effortlessly, and there are no odd color shifts to worry about. The effect is subtle but makes a noticeable difference for both portraits and video. If you’re chasing that polished, dreamy vibe, this filter is a no-brainer.

Everything is very cut and dry here. This black diffusion filter works as intended, and it safely, securely gets the job done.
K&F Concept does a great job with making quality lenses at a pocket friendly price, so - as expected - this hits all the high points.

The filter is well made and durable. Images are crystal clear, and the desired effect is achieved at half the price of bigger name filters.

It attaches securely to my camera. The multi coating means the filter is scratch resistant.

Top quality at a great price here.

I've been using the Nano series of K&F filters for the past few years, and have found them to be in the top tier of filters. (I'm also someone who has at least a "protection" type filter on my lens almost all the time.)

This is a fairly subtle filter; I think you could come close to simulating what it does with some careful tweaking in your photo editor—but I'm not quite sure about that. It has a VERY gentle softening effect, but does this without adding a "haze" like most diffusers do—so it has a bit less of a halo quality on highlights, if that makes sense. Colors don't lose saturation. I also think this makes it pretty useful. I think I might be happier with a 1/4 rather than the 1/8 effect that I bought—but that's not to fault this glass.

The past few years most of my "serious" shooting has been medium format, and at times the detail levels, especially on people, can become problematic. Diffusors can help soften the image, and often also effect the contrast; black diffusion has less effect on the contrast.

As with the other K&F filters I've been using, the ring is nicely machined, and threads very easily. Being from the PRO line means this also gets the ring in brass, which gives the filter the weight that the nice German filters I used to always use had. And brass does feel even smoother than the aluminum typically used. It also comes with a very nice fabric and suede case. Coating on these are top notch.