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Lens filter problem
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Aug 2, 2021 07:04:02   #
Don, the 2nd son Loc: Crowded Florida
 
User ID wrote:
It’s not stuck. It turns in place. Do NOT use a wrench.

The threads on the PL have “gone behind” the lens threads. The PL is not rotating on its built in adjustment ring. The entire PL, back ring and all, is rotating in place.

The lens has a nonthreaded gap behind the threaded area. The PL has a nonthreaded gap forward of its threaded area. Just gently pull the PL forward while turning it CCW so that the threads of the PL reengage with the lens threads.

That particular PL is not a good choice for that lens. It needs filters with no nonthreaded area. In comparing threads of the PL to the threads of the UV the difference should be evident.

This problem often occurs with lenses that have plastic filter threads. The threads do not continue all the way to the trim ring, leaving a gap.
It’s not stuck. It turns in place. Do NOT use a wr... (show quote)



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Aug 2, 2021 07:14:43   #
billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont
 
trapper1 wrote:
When I bought my Nikon 18-200 lens I also bought a UV filter and a circular polarizer filter for it. The UV stays on the lens all the time for protection. I have used the CP lens several times and at no time had any problems attaching or removing either filter. I mount them with the CP lens first followed by the UV for protection. Today
I removed the UV but the CP lens would not come off. It would not unscrew, it just revolved as if there were no threads. Then I found it would not tighten up either, not in the least. Now it will neither come off nor seat. If anyone has had a similar experience and solved the problem I would appreciate hearing from you.
When I bought my Nikon 18-200 lens I also bought a... (show quote)


You need this.
https://www.bhphotovideo.com/c/search?Ntt=filter%20wrench&N=0&InitialSearch=yes&sts=ps

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Aug 2, 2021 08:38:28   #
Lucian Loc: From Wales, living in Ohio
 
Longshadow wrote:

I'll guess that the UV isn't "stuck" per se, so much as the outer ring of the polarizer is rotating when you try to undo the UV filter. Yo deed to stop it from rotating to unscrew the UV.


He is not having trouble with his UV. It's his CP that is the problem.

As has been said, never put on a CV first and stack on top because this is a common problem. The rubber band method is usually the best to try and also let the lens warm up in the sun a bit to help expand the metal slightly.

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Aug 2, 2021 08:40:21   #
fetzler Loc: North West PA
 
ClarkJohnson wrote:
Stuck filters can be maddening and not logical. Applying extra force is NOT going to be successful. A filter wrench might help. But I have found that a gentle approach often works best. Or, let it sit for a little while and try again. I have had filters that resist furious attempts to remove them suddenly twist off easily.

BTW, I don’t like to stack filters for IQ reasons. If I want to use a CP, I take off the UV.

Good luck!


Indeed!

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Aug 2, 2021 08:40:39   #
Lucian Loc: From Wales, living in Ohio
 
User ID wrote:
You are correct in saying “as if it has no threads”. You have run it in past the threads.

When you bottom out the filter into the lens the threaded areas of both items have gone past each other. Just pull the filter forward as you unscrew it, so as to catch the threads.

The few times you had no problem, there was likely less than about 1/10 turn of threading still engaged, but in normally snugging the filter into place you wore away the fragile bit of plastic. It’s a cheap design, not abuse on your part, thaz at fault.

In sadly typical UHH manner, no one else has read what you plainly wrote. Keep that in mind next time you seek advice from these faux experts. They seldom if ever read what is right in front of them :-(
You are correct in saying “as if it has no threads... (show quote)


I second that!!

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Aug 2, 2021 08:45:08   #
Lucian Loc: From Wales, living in Ohio
 
DirtFarmer wrote:
Stacking filters can also cause vignetting.


On a wide angle lens possibly but not when using telephoto lenses.

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Aug 2, 2021 09:47:50   #
bobbydvideo
 
I bought a filter wrench from Amazon to remove mine. It was really stuck. I have learned not to screw them on so tight.

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Aug 2, 2021 10:02:31   #
pol2015 Loc: Belfast
 
trapper1 wrote:
When I bought my Nikon 18-200 lens I also bought a UV filter and a circular polarizer filter for it. The UV stays on the lens all the time for protection. I have used the CP lens several times and at no time had any problems attaching or removing either filter. I mount them with the CP lens first followed by the UV for protection. Today
I removed the UV but the CP lens would not come off. It would not unscrew, it just revolved as if there were no threads. Then I found it would not tighten up either, not in the least. Now it will neither come off nor seat. If anyone has had a similar experience and solved the problem I would appreciate hearing from you.
When I bought my Nikon 18-200 lens I also bought a... (show quote)


I've had 'stuck' filters before. Force doesn't shift them as the more force you use distorts the ring. Try very gentle pressure and they usually unscrew very easily.

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Aug 2, 2021 10:39:17   #
photoman43
 
ClarkJohnson wrote:
Stuck filters can be maddening and not logical. Applying extra force is NOT going to be successful. A filter wrench might help. But I have found that a gentle approach often works best. Or, let it sit for a little while and try again. I have had filters that resist furious attempts to remove them suddenly twist off easily.

BTW, I don’t like to stack filters for IQ reasons. If I want to use a CP, I take off the UV.

Good luck!


I also never add a CPL to a UV or other filter. In addition to a short rest, place the two stuck filters is a place where a temperature change can take place, either colder or hotter. With the temp change, you may be able to remove one from the other. Rubber band added to one or both rings might help get a better grip. Gentle twisting usually work better than brute force.

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Aug 2, 2021 10:50:41   #
Silversleuth Loc: San Francisco Bay Area
 
I guess soaking the lens and filter in WD 40 is probably not a good idea.🙀

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Aug 2, 2021 10:51:42   #
User ID
 
dpullum wrote:
The glass part of filters is usually held in place with a spring clip. One can remove the clip and then the glass will fall out or can be helped with a vacuum cup. Without the glass and clip, the rest of the filter may unscrew. Worse comes needle nose pliers can twist and shrink the stuck filter ring thereby allowing removal.

The construction of the filter is beside the point. There’s nothing wrong with it. And the filter is not stuck or jammed so there is no need or reason to destroy it.

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Aug 2, 2021 11:03:10   #
User ID
 
billnikon wrote:
You need this.
https://www.bhphotovideo.com/c/search?Ntt=filter%20wrench&N=0&InitialSearch=yes&sts=ps


No, he certainly does not.

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Aug 2, 2021 11:17:04   #
bobbydvideo
 
NO!!!

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Aug 2, 2021 11:32:53   #
peter.zimmerman
 
A good demonstration of why stacking filters is not a good idea. It degrades the IQ and can easily get you in a situation where you can’t separate them when you need to.

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Aug 2, 2021 11:57:20   #
willaim Loc: Sunny Southern California
 
Invest in a set of Filter Wrenches. They are not expensive and they DO remove stuck filters. Also, I don't think you should stack a polarizer with the UV. Use the polarizer by itself.

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