K&F contacted me to test the new Black Mist filter. It is a filter designed for videos and to give a “vintage” touch to the final result. In short: a wonderful result also for photography. It is a useful filter for portraits or for landscape reportage or storytelling. You do not lose sharpness and you get a much less “shot” light that also expands in the shadow area. It is a filter to be used in photography with high apertures and that “tells” an atmosphere. But let's start from the beginning. Packaging/handling: In addition to the plastic box, the filter is inserted in a very resistant and protective snap-on case. The filter is screw-on (rightly so because it was created for video makers and in any case up to a diameter of 82). I would have preferred a cardboard box. But the case that you can see in the photo (the round one) is very useful and sturdy. The filter appears resistant and screws well onto all the lenses to which I have mounted it. Technical review: It has no dominant details, so it leaves the colors similar to the photo taken without a filter. Excellent! It does not lose light, you do not find yourself having to increase the ISO when you mount it. Excellent! The sharpness in the details (and here comes the best part) remains almost unchanged. You do NOT lose sharpness in the areas in focus even if I would not use it for ultra-defined landscape photography, but for storytelling, outdoor or environmental portraiture absolutely yes. The automatic focus is not affected by the filter, at least not on the Nikon D750 with fixed lenses. Use / Effect: it is a filter that gives a "glow" effect to photos, very particular especially for videos and for portraits in hard light or backlight. The highlights are lowered but without becoming dull, furthermore the light "enters" the shadows, giving a very soft "glow" effect. Excellent for portraits or to give a more dreamy atmosphere, it takes away clarity from the image in the high contrast areas. In the photos you can see a couple of comparisons without filter/with filter, two photos of environmental portrait and what you get. Result in short: it is a filter that you do not think will fit in your kit, but when it does it has such a particular result that you would try it in every situation. Absolutely to try!