So, I brought this to see why it was more expensive than the cheaper filters, but a lot cheaper than the likes of lee filters etc, I have been extremely impressed!I have taken this out today and although an over cast day, and I went to the beach at low tide, I thought I would use this as a chance to see if it’s any good.The first wow I had was the packaging... not something I usually bother about, but it is a thing of beauty. Then the quality of the mount rings, they are solid unlike all the other sets I have had that the mount rings have broken after a use or two. The quick realease ring took a couple of goes to get on then I noticed you have to put the far side in first then it locks in place really easily.Now the most important thing... the glass filter itself. Packaged really well, it does seem to be slightly static, but a rub down with a cloth and it doesn’t seem to attract dust at all. It holds tightly in the holder and is defiantly not going to move once in place. The quality of the glass looks awesome. Images have come out clean, and not a colour cast (although I thought it would have a green hue from looking at the filter the images do not seem to have any noticeable cast at all) and it does seem to be almost exactly 10 stops.I would easily recommend this to those looking to move into long exposure photography as it is well made, super easy to use and quality bit of kit to add some variety to your photography.I have attached a comparison of what the camera gave in auto and what I could get from the same scene with the filter.