A filter that basically lives on my lenses
I've been using K&F Concept Nano-X Black Mist 1/8 filters for quite a while now, and at this point they pretty much stay on all my lenses. I mainly shoot street and travel photography, and I really like how subtle the effect is. It gives highlights a gentle glow, slightly softens contrast and takes some of the clinical digital sharpness away without making the image look obviously filtered. The 1/8 strength is the sweet spot for me — subtle enough for everyday shooting, but especially nice at night or whenever there are strong highlights and artificial lights in the frame. It gives the image a slightly more organic feel while still keeping plenty of detail. The filters themselves feel well made and, after using them extensively, they've basically become part of my normal shooting setup. I rarely take them off.