Those who know this brand know that it generally offers good quality products at fair prices, and this filter is no exception. Essentially it is a single unit that contains 3 different filters: polarizer, variable nd and black mist.
- The polarizer serves to dampen reflected light, especially on surfaces such as glass or bodies of water.
- The variable nd darkens the image in an adjustable amount at will, so as not to overexpose the lighter parts of the image
- The black mist tends to soften blacks and create a 'kinematic' effect.

It is possible to change the amount of 'filtering' applied by both the ND and the polarizer, thanks to a special knob. Unfortunately, because of this, it is not possible to use a lens hood, since the filter is rather cumbersome. The quality of the image and the colors obtained are interesting, but above all it is very useful and stimulating to have a series of effects that can be modulated on the fly without having to mount 3 different filters. It's very simple to achieve a variety of different looks using this filter alone.

The price is reasonable and honestly I find it difficult to think of an alternative that offers the same quality-price ratio.