B+W failure
p.1 #1B+W failure
My 95mm nano filter has fallen apart. The glass is held in place with a rear ring that has micro threads, but it somehow unscrewed doesn't go back in very far. Has anyone had the filters serviced?
Please no comments about not using filters. After 50 years of SLRs I know when to use a filter and what kind for what purpose.
Thanks.
EBH
Please no comments about not using filters. After 50 years of SLRs I know when to use a filter and what kind for what purpose.
Thanks.
EBH
Sep 09, 2026 at 08:43 AM
p.1 #2B+W failure
Maybe it has multiple entries and you didn't get into the proper one.
When put them toghether go in reverse until you hear/feel a faint click. Then go easy with normal screwing.
When put them toghether go in reverse until you hear/feel a faint click. Then go easy with normal screwing.
Sep 10, 2026 at 06:33 PM
p.1 #3B+W failure
Does the inner retention ring extend beyond the edge of the outer filter ring when loose? If so, try laying the inner ring down on a grippy pad (rubber, silicone, etc) facing up with the glass on top and threading the outer ring onto it. Sometimes it's easier to keep both rings flat and parallel that way rather than trying to hold the inner ring steady.
Sep 11, 2026 at 03:52 PM
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p.1 #4B+W failure
I'm quite sure that this is a single thread. The combination of big diameter, fine pitch and fragile ring makes this a dexterity test. It might be possible to identify where the threads start and mark the parts.
Sep 13, 2026 at 08:41 AM
p.1 #5B+W failure
Thanks for the info. I had a medical urgency and have not gotten back to that filter issue. When I'm fully on my feet I'll try to find some rubbers and see what I can do.
EBH
EBH
Sep 14, 2026 at 06:40 PM
p.1 #6B+W failure
I cannot get it to work, maybe the threads of the retainer are damaged. 
It's time to try something else.
EBH
It's time to try something else.EBH
Sep 23, 2026 at 05:14 PM