K&F contacted me to test the new Black Mist filter. It's a filter designed for videos that gives a "vintage touch" to the end result. In short: a wonderful result for photography too. It is a useful filter for portrait or landscape reportage or storytelling. You do not lose sharpness and you get a much less “burnt” light, which stretches even in the shadowed area. It's a filter that can be used in high aperture photography that "tells" an atmosphere. But let's start from the beginning. Packaging/handling: In addition to the plastic box, the filter is placed in a very durable and protective snap-on housing. The filter is a screw (rightly so, because it was created for video masers and in any case up to 82 diameters). I would have preferred a cardboard box. But the case you can see in the picture (the round one) is very useful and sturdy. The filter is durable and screws well onto all the targets I've mounted. Technical review: It has no dominant details, so the colors remain similar to the photo taken without any filter. Great! There is no light, you don't need to increase the iso when you mount it. Great! The sharpness in detail (and here comes the beauty) remains almost unchanged. They don't lose sharpness in the areas of focus, even if I wouldn't use them in Ultra-Defined Landscape photography, but for a storytelling, outdoor or portrait set, absolutely you. Autofocus is not affected by the filter, at least not on the Nikon D750 with fixed lenses. Use/Effect: It is a filter that gives photos a glow effect, very specific especially for videos and portraits in hard light or backlight. The highlights are flattened without becoming dull, and the light "enters" the shadows, giving a very soft "glow" effect. Ideal for portraits or to give a more dreamy atmosphere, eliminates clarity of the image in high-contrast areas. In the photos you can see some comparisons without filter/with filter, two portrait photos and what to expect. Result in short: it's a filter that you won't believe will fit in your kit, but when it does, it has such a special result that you'd try it in any situation. Be sure to try it!