have broken down my evaluation for you and them into reason for purchase, first impression, product test, suggestions for improvement, tips and conclusion. I hope this helps with clarity. I received the product for free as a Vine product tester, but this does not affect my rating. I only test things that I can use sensibly and integrate into my everyday life. Reason for purchase: I ordered this filter for 2 reasons. The first reason is that if I just want to travel light, I don't want to take my complete cartridge filter system with me. Secondly, I can use it well in videography, where I usually film according to the 180 degree rule. This means that in order to get a cinematic video image with a certain degree of motion blur in the individual image, you film e.g. B. with a shutter speed of 1/fps x 2, I'm filming at 50fps, so I need an exposure time of 1/100s, which is not possible without an ND filter, especially at wide angle in sunshine. First impression: the packaging looks very classy, but given the asking price for the filter, it is allowed to do so. The filter is in an equally pretty and high-quality filter bag, which I have never seen in this form with round filters. The tab on the side allows you to lift the filter to avoid accidental contact with the glass when removing it. The closure of the bag is magnetic. A nice gimmick is that the cardboard packaging of the filter can be transformed into a small picture frame. Product test: The filter feels like a dream, heavy (91g) and easy to grip, I also really like the color-contrasting adjustment aids. These can also be removed if you wish to continue using a lens hood. For this you need a small Microtorx, eg from a precision mechanical kit. When the filter is set, it runs buttery smooth across all stages. The filter showed no weaknesses in the test. As a result, I could not detect any color cast and there was also no X-Cross effect. The promised effect of up to 5 f-stops is retained. Technically perfect and that is the most important aspect of an ND filter. Suggestions for improvement: 1. The sustainability aspect, as taken up when cardboard is used as a picture frame, could also be reflected in the filter bag by not using animal products (leather). 2. An 82mm variant would be desirable and recommendable, then the filter could also be used on (m) a 24-70mm/2.8, for example. Tips: It is always advisable to buy such a filter with the largest possible diameter so that you can adapt it to as many lenses in your own fleet as possible using step-down rings. Of course, this also eliminates the possibility of continuing to use a sun visor. Conclusion: Technically flawless filter in the upper price segment. I hope my review was helpful in your decision making.