Dust on UV Filter
Hi Everyone... i just bought a used B+W and Hoya filters. They seem to have dust - specks at best, on both sides. No mater what I do, i can't get rid of it. Is this normal? I've looked at my old UV filters which I've bought new and they all seem to accumlate this type of debris.
|AT-6 Harvard by jarud|
from Trainer aircraft
|Monarch butterflies winter roost at Pismo Beach by cjf2|
from Safety in Numbers (Nature)