For amateur photographers very well

For me as an amateur photographer of the filter makes good photos. I use it on a 24-200mm zoom lens, and I realize that the filter in the telephoto zoom range is weaker, and also in the lower range up to 35 mm, it tends to produce a stronger vignetting. This is partly due to the wide-angle and the other on the double ring, because I need to move the gray half at any time if I switch between portrait and landscape mode. In the angle range between 35 and 135mm, the filter for my needs good pictures.
One star deduction for the filter box, in which the filter was delivered. The foam insert was so thin that the filter is not got stuck in the box.
Conclusion: the filter returns in the range 35 - 135mm good photos.