I got this filter for my long-awaited Fujifilm X100VI. This is a 1/4 strength black mist diffusion filter, and it provides a very subtle diffusion effect which works very well for slightly softening portraits. The silver frame of the filter is a great match for the silver of the camera and looks very good when screwed on. I plan on leaving this filter on my camera all the time (it's great for protection as well as for the diffusion effect) but I appreciate that is comes with a hard plastic storage case to keep it safe if I do remove the filter.

K&F also makes a clear UV protector version of this filter, so if you like the idea of a protective filter on your X100 camera but don't want the diffusion effect that this particular filter provides, you could opt for that instead.

The filter has a magnetic frame that allows you to add K&F's magnetic filters. I have some of these filters in a larger size that I use for my Nikon DSLR and it's a great system so I likely will buy a couple of 52mm magnetic filters to use with this filter; I'd like the polarizer and ND filter. I've collected more than 10 K&F filters over the years and have always been super happy with the quality. They make great products and this one is no exception. Highly recommended if you're lucky enough to own a camera from the X100 series!