thanks for the replies. Perhaps to clarify why I am asking, I am quite keen on coated filters, but many ebay sellers do not know or can't be asked to tell you whether a filter is or isn't coated. So I am keen to be able from the
- kind of case
to figure whether a filter is likely to be coated or not. Perhaps I should have asked my question this way right away.
So far I just took my chances and sometimes I was lucky and other times I wasn't.
The comment that filters marked 28.5 are pretty old seems to make sense. None of these is coated.
Other comments? -Ta-