I've been taking photos as a hobby for several decades, first analogue, then of course almost exclusively digital for 15 years, i.e. I've seen and tried out a number of photo accessories over the years. With the filter I bought here, three things were decisive. 1. The quality, I've spent too much money unnecessarily on useless photo accessories 2. The price, I don't see an point in spending more money which you don't see in the photos afterwards anyway 3. The durability and expansion of a plug-in filter system Attached Image with the graduated gray filter All points speak for this product. The filters are quickly attached, make a stable impression and are supplied in a practical case. The plug-in filter system is more than useful for the hobby photographer. In any case, I wouldn't want to be without it in my photo bag. I can't understand the fact that the filters are difficult to insert, which is often criticized here, on the contrary I even find this important because otherwise the filter could quickly fall through. After more than half a year and several sessions, I can only say about the durability of the filters, so far nothing has been scratched or even broken. Conclusion: Anyone who takes pictures knows that this hobby can sometimes cost a lot of money, and often with this hobby it really is so; "If you buy cheap, you buy twice". However, I don't have the impression with this product that the more expensive competitors, who also offer plug-in filter systems, do it so much better that the surcharge would be worth it here. That's why I can only recommend this system