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Go Back   Olympus UK E-System User Group > Cameras, lenses and system accessories > Lens focus > Converters, adapters and extension tubes

Converters, adapters and extension tubes All those lens accessories that get in between the lens and the camera.

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Old 27th August 2014
Anne Anne is offline
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Removing an adapter ring?

I'm looking for advice please on removing a cheap OM to m4/3rd's adapter ring from an old Tamron lens, or more specifically the Olympus adapter that goes on first.

I lent my dad the small Tamron 70-210 lens and an adapter from HK/China. The adapter was very stiff to put on the lens and I asked my dad to not put it on fully however, he or I'm guessing someone else has forced it to lock on fully. He has now given me back the lens and I can not remove the adapter.

I have tried with the Tamron OM mount both on and off the lens, to no avail. There is one small Phillips type screw visible on the mount but I can not undo that either and the thread is starting to go. To be fair I very rarely use my old Tamron lenses but it seems a shame to junk the adapter. I was wondering if anyone had any good suggestions as to how I might remove it?

Giving my 80 year old dad an EP2 has been a somewhat frustrating experience as he is struggling to grasp the concept that he is in control of the settings unlike with his point and shoot compact. However he wants to take photos of birds hence why he took my old lens. I've now sent him back home with my m14-150 which will be easier for him to use....but might be a mistake for me
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Old 27th August 2014
Jim Ford Jim Ford is offline
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Re: Removing an adapter ring?

If you get stuck, I'll have a look at it for you. I'm a retired engineer also in Herts. (Watford), so maybe we can meet.

I guess by "the thread is starting to go" on the Phillips screw, you mean the screw 'slot'.
Screws are often fitted with a locking compound. This can be generally be softened by placing the tip of a soldering iron on the screw head for a few seconds.

Jim
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Old 27th August 2014
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Lightbulb Re: Removing an adapter ring?

This may seem counter intuitive, but sometimes twisting the mount in the direction you would to put it on, while holding down the release button, will release the locking pin and allow the mount to rotate in the direction required to take it off.

I've not said "Clockwise" or "Counter Clockwise" as i don't know if you may be left handed and hold the lens/adapter in the other hands.

Hope you get it off ok...
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Old 27th August 2014
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Re: Removing an adapter ring?

Try putting them in the freezer. If that doesn't work try heating them up.
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Old 28th August 2014
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Re: Removing an adapter ring?

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Originally Posted by David M View Post
Try putting them in the freezer. If that doesn't work try heating them up.
But not too much! The grease in the lens can melt and run onto the leaves of the iris causing the aperture to stick if you are not careful. Gentle heat should cause the metal to expand slightly which should help to loosen the adapter ring.

Cheers,

Ralph.
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Old 28th August 2014
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Re: Removing an adapter ring?

As you can take the adaptall mount off the lens you can just put the adapters in the freezer/oven.
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Old 29th August 2014
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Re: Removing an adapter ring?

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Originally Posted by David M View Post
Try putting them in the freezer. If that doesn't work try heating them up.
Heating it with a hair dryer (just the ring as much as possible) would have the best effect (jam jar lids can go under hot running water, but not a lens).
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Old 29th August 2014
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Re: Removing an adapter ring?

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Originally Posted by Ross the fiddler View Post
Heating it with a hair dryer...
+1

You could also try one of the rubber strap type jam jar lid removal tools to get a firm purchase (make sure all locking buttons are disengaged first).
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Old 31st August 2014
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Re: Removing an adapter ring?

Sorry I haven't got back to you all regarding my post...to say the last few days have been busy is somewhat of an understatement!

Jim, thank you for your kind offer and I may take you up on it if that is OK. I can meet you wherever it is convenient for you although if you are going into Watford in the near future, that would be really easy for me.

However I will try the suggestions above first so that I don't waste your time. I do think that it will be brute force required though The adapter ring didn't want to go on in the first place as it was incredibly tight.
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Old 2nd September 2014
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Re: Removing an adapter ring?

I've PM'd you Anne.

Jim
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Old 2nd September 2014
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Re: Removing an adapter ring?

Quote:
Originally Posted by David M View Post
Try putting them in the freezer. If that doesn't work try heating them up.
David, I seem to recall that you have a predilection for baking lenses in the oven, usually to kill fungus on the elements!
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Old 2nd September 2014
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Re: Removing an adapter ring?

True John, but I had to put my monopod in the freezer to get the leg logs to release this summer. It was 30C when I found the locks locked but the last time I'd used the monopod had been in deep snow at -20C so I put it in the freezer.
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Old 3rd September 2014
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Re: Removing an adapter ring?

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Originally Posted by David M View Post
True John, but I had to put my monopod in the freezer to get the leg logs to release this summer. It was 30C when I found the locks locked but the last time I'd used the monopod had been in deep snow at -20C so I put it in the freezer.
You do have a wide range of temperatures over there!
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Old 4th September 2014
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Re: Removing an adapter ring?

We have a wider range than that John. I've shot film at -40 in Saskatchewan. It's 28C feeling like 36 with the humidity this evening. Tomorrow it's forecast to be 30C feeling like 40. They've had snow in the foothills of Alberta this week.
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Old 5th September 2014
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Re: Removing an adapter ring?

Thinking about the actual cause of this jam the first thing that springs to my mind is a fixing screw in the mounting face of the adapter not being tight and and flush with the surface. This would cause the tightness.
I would definitely try putting the lens in an airtight box container and put it in the freezer for a few hours. Then using gloves or a towel to protect your hands from the cold immediately try to remove the adapter. The problem here is with condensation. Once you take it out of the freezer it will start to warm up and condensation will form, so it needs to be warmed up slowly.
Be careful though, using more force could cause further damage to both parts. The lens body is going to have to be gripped tightly while trying to twist the adapter off and the barrel of the lens could suffer as a result.
Ultimately I think you are going to have to sacrifice the cheap adapter which may mean getting it carefully cut off. A Dremmel type drill with a small cutting disk would work. Firstly why not speak to someone at a camera repair company. I'm sure they will have dealt with this sort of problem before.

Steve
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