I really enjoyed using the Filter, it was really easy to use and came in a nice case. The added lens cloth was an appreciated touch. As a person who typically does not use filters or ND filters it was a new experience for me using the filter. Comparing the cost of some of the more expensive filters I was happy with the K&F concept filter. Although I did notice some abnormalities at the darker settings when using it to pull down a stop or two it was quite a joy. The filter was not gummy or difficult to rotate on the lens, going on the camera was easy and smooth. The glass appeared to be very clean and of a higher quality than some of the other cheap filters I have seen others using. Overall happy with the filter and will continue to use it on my camera in those hot sunny days to get an extra stop or two of light out of it. The photographs I took with the filter were in downtown Chicago on a very sunny day testing the filters ability, while noting the filters abnormalities in light on darker settings the lighter setting were enough for me to get my aperture where I wanted it, all I really wanted from the filter which was nice. Again happy with the product would recommend to anyone looking to buy a filter for the first time to try it out.