Fulfills exactly my expectations

The build quality is top, it wobbles nothing and the filter is located on plane-parallel. Disturbing image effects such as light reflections are not yet occurred to me. In the wide-angle range of 18mm I could see no vignetting.

Subjectively, I am also of the opinion that the picture quality has improved slightly, but maybe that is also due to the lens hood, which I bought at the same time with them.

Since I do not have expensive filters, eg by Hoya tried, of course, I do not know if that would not even better. Although I would have to ask me what could be improved in a UV filter.

However, I would advise not to any such cheap filter to buy under 10 euros. Their surface is in fact not paid, and thus the probability disturbing light reflections rises on the filter glass to have, then what is to be seen as unsightly spots in the image.