At first I only noticed that the glass filter in obviously is unstable (slight rattle), but that did not bother me. But now I realize that dust collects behind the filter. If there is dust on the filter, and you come up with the idea to blow this off, so you can then equal to unscrew the filter and blow the dust from the inside of the filter and the lens of the objective. So far I have this "property" only if the Tamron filter (my only this brand) will in future probably more inclined again to other brands. This is not a rating of the optical properties of the filter. Because these filters are mainly or often called "protection" of the lens used- no recommendation!
And to answer the question: Yes, the filter is definitely in the correct size, how to screw him otherwise please? In addition, however, it is not my only filter / lens the only filter the "leak" is!
