As a landscape photographer, I found this filter system really interesting. Unlike screw filters, these filters are applied and removed in a fraction of a second, while unlike plate filters they are much less bulky, lighter and, obviously, much quicker to install. PACKAGING AND ATTENTION TO DETAILS Filters are delivered inside a comfortable and really well made case with four compartments. The case, in the back, has a hook and loop buckle that we can use to attach it to our tripod or to our trousers and, also, a metal ring so that it can be attached to our backpack, to the tripod column or wherever we prefer. Finally, the zip closure of the case is proof against rain or water infiltration. The filters are contained and protected individually within special sachets to avoid any potential damage. CONSTRUCTION These magnetic filters from the Nano Series by K&F Concept are made of optical glass perfectly resistant to water, oil and dust. The external frame is made of slightly knurled aluminum to allow an excellent grip. They are extremely thin and, even by mounting all three filters at the same time (UV, CPL and ND1000), the thickness is extremely limited. UV FILTER In the photographs I took with the UV filter there are no color alterations, no loss of sharpness and details and no casts of any kind.POLARIZING FILTERThis polarizing filter provides a pleasant overall contrast to the image, increasing the contrast between the individual colors and saturating them without exaggerating. Furthermore, it provides a very slight warm cast which, personally, I don't mind but which is easily correctable in post-production.ND1000 FILTERThe first thing that strikes you when using this ND filter is that it produces a slight - but present - warm cast. Personally I think it is not a problem as it can be removed with one click in post-production. Finally, the overall sharpness as well as the details of the image are not altered. CPL + ND1000 FILTER. I consider the CPL + ND1000 combination very interesting. In fact, the polarization effect reduces the warm cast of the ND1000 filter and also provides a pleasant saturation and a soft contrast overall and between the colors of the final image. In terms of sharpness and details, there are no significant deteriorations. However, there is a slight vignetting. PRACTICALITY The K&F Concept Nano Series magnetic filter kit is truly extremely practical. The case that contains the filters has compact dimensions, which allows us to carry it in our backpack sacrificing very little space. The weight is extremely light, which is really useful for those who go on long excursions where the weight of the equipment, after several hours, it starts to make itself felt. The installation and removal of the filters is nothing short of lightning-fast; in a matter of seconds you can easily mount all three filters and, in just as many seconds, they can be removed. The hold of the magnets is really good and therefore there is no fear of finding yourself with filters that fall during the installation phase. shutter or transport. TO WHOM IT IS RECOMMENDED In conclusion, I would strongly recommend this filter kit with an excellent quality/price ratio to: - those looking for a first filter kit to start experimenting with creativity; - those looking for an excellent value between quality, size and weight; - those looking for maximum convenience when shooting and composing. PS The filter comparison photos have not been edited and, therefore, are the original file directly exported from the machine from RAW to JPG format.