I’ve used a handful of diffusion filters over the years, and I really like the ones from K&F Concept I picked this up mostly for portrait work and some night street photography.
The effect is subtle but noticeable. It softens highlights just enough to give that dreamy, cinematic glow without turning everything into a foggy mess. Street lights, candles, even harsh LED signs get a nice bloom that feels organic. It’s great for video too, and adds that texture without needing post-production filters.
Build-wise, it’s solid. The frame is ultra-slim, so no vignetting even on my wide-angle lens. It screws on smoothly and doesn’t feel cheap, which is more than I can say for some filters in this price range. I also appreciate that it doesn’t mess with color balance, no weird tints or shifts, just clean diffusion.
One thing to note: if you’re expecting a heavy mist effect, this isn’t that. It’s more of a 1/4 strength softener, which is perfect for keeping detail while still smoothing out harsh edges. If you want something stronger, you might want to look at the 1/2 version.
Overall, for the price, this filter punches way above its weight. It’s great for portraits, vlogs, and nighttime city shots. If you’re chasing that “cinematic” look without breaking the bank, this is a solid pick. The only thing I wish was included is a lens cover. I have to remove this to put my lens cover on, they should make these with covers.