As a photographer, I use filters, but it's not always easy to put on or take off depending on the situation. But with this system, it becomes so simple that it's almost instantaneous. The product is of very good construction quality and it comes with a very well-made 4-pocket pouch that is resistant to possible knocks. It can be attached to the belt using a Velcro strap. The kit is made up of two screw-in rings, one UV and one empty on which the CPL filter or the ND1000 can be attached. I really wanted to go and test this new product. First with the CPL filter alone and then with the CPL filter + the ND1000 together. The results are nothing short of astonishing. Here are the renderings with the CPL filter on the left and the CPL + ND 1000 on the right. With the filters, there is no loss of sharpness, and color drift is almost zero. The CPL filter polarizes perfectly and the ND 1000 filter is very astonishing in its performance, it is very fine which limits vignetting, a plus. When using the two together, it is better to avoid ultra wide angle focal lengths, but from 16mm, no problem, they can be added together. In addition, they are compatible with my sun visor, I was able to put them on and take them off without having to remove it very easily because the magnetic force is perfectly balanced. Really very satisfied with this first outing, I hope that others Intermediate magnetic filters with this system will be released soon to complete the offer. If there were magnetic lens caps, that would be great. It's a very good investment and the price is more than fair given the quality and results obtained .