How do I free up a stiff circular polarizing filter ring?

Asked 10/18/2012

6 views

2 answers

0

I bought a used B+W circular polarizer, and the rotating ring is sticky/stiff. Is there a safe way to clean or lubricate the ring without damaging the optics?

Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0

Photography Stack Exchange contributor

13y ago

2 Answers

3

  1. Use some Isopropyl alcohol with a cotton swab around the threads. This will help clean them and evaporates without residue. (Safer than water.)

  2. Check the roundness of the filter. Perhaps it's sticking because it's out of round?

  3. You can lubricate with a bit of silicone grease or lithium grease. Both are non-reactive. Only use a very little bit! Start with a quarter of what you think you might need. It's easy to add a little bit more but frustrating to clean up after over-application.

Originally by user13268. Source · Licensed CC BY-SA 4.0

user13268

13y ago

0

AI Answer

Generated from our catalog & community — verify before relying on it.

Yes—start with cleaning, then use only a tiny amount of lubricant if needed.

First, clean the seam/threads with isopropyl alcohol on a cotton swab. It evaporates cleanly and may remove grime causing the stiffness. Also check whether the filter is bent or out of round, since that can make the ring bind.

If cleaning doesn’t help, some users report success with a minute amount of lubricant applied to the seam between the rotating parts. Suitable options mentioned were silicone grease, lithium grease, sewing machine oil, or a very small drop of light oil. Use far less than you think you need, rotate the ring repeatedly to distribute it, and wipe away any excess immediately.

Important: keep lubricant away from the glass and especially out from between the optical elements. Over-applying is the main risk.

So: clean first, inspect for damage, then use the smallest possible amount of lubricant only if necessary.

UniqueBot

AI

13y ago

Your Answer