I just took delivery of a new B+W Kaesemann polarizer filter. Upon closer inspection, I noticed several apparent bubbles in the polarizer foil. These bubbles are rather small in size, no more than a few millimeters each. Should I be concerned? Is this normal/acceptable? Should I return the new filter while I can?
I have another B+W Kaesemann, in a smaller size, which has one of these bubbles as well. I never noticed it until quite recently, and it has no apparent ill effects on images made with it so far...
Any insight is appreciated! Thanks!
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