As a full-time photographer and part-time iPhone content wizard, I wasn’t expecting much when I decided to slap a diffusion filter onto my phone setup—but the K&F Concept 67mm Black Diffusion 1/8 Filter made me eat my doubts for breakfast.

First of all, the build quality? Solid. This thing feels like it belongs on a $3,000 cinema rig, not chilling on my smartphone via a filter adapter. K&F always delivers in that department, and this one’s no different. The slim 3.3mm frame is lightweight but doesn’t feel cheap, and it slips on and off without a fight (thank you, CNC non-slip design).

Now let’s talk look. The diffusion is subtle but so effective—skin looks smoother, highlights are tamed, and everything gets that soft, low-contrast, "did-you-shoot-this-on-film?" vibe. It gives me that dreamy haze without turning everything into a foggy mess. Perfect for those quick reels or talking-head videos where I want to look 10% more like a movie star and 30% less like someone who just rolled out of bed.

There’s no weird color shift (shoutout to the AGC optical glass with 87% transmittance), and I haven’t noticed any vignetting at all. Plus, it's easy to clean—huge bonus when you're constantly touching your gear with post-lunch fingers.

Bottom line: If you’re shooting content on your phone but want it to feel like you rented an A24 lighting package, this is a must. Add an adapter and thank me later.

Oh, and pro tip: make sure your lens thread is 67mm. Don’t be that person.