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Edmond Stuart
Joined: 07 Jan 2015
Posts: 4
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 Posted: Wed Jan 07, 2015 4:51 pm Post subject: How to remove the Mamiya adapter on a CZJ 180mm f2.8? |
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Edmond Stuart wrote:
I've recently bought a Carl Zeiss 180mm / 2.8 MC, fitted with a Mamiya adapter, see picture.
The serial number is: 10157669. I like to replace the adapter with another one, but I'm unable to turn the ring that holds the adapter, in either direction, that is, without applying brute force.
Before I proceed, I've a few (perhaps stupid) questions:
1. Can this adapter be removed anyhow?
2. If so, I suppose by unscrewing the ring that holds the adapter (see picture, red arrow)
But in which direction? I know that in most cases it is clockwise, that is, seeing from the rear (rather counter-intuitive, BTW).
3. Applies this to all adapters (including Mamiya)?
4. Since this ring is so firmly tightened, I can't loosen it manually. Are there special tools to apply brute force without damaging the lens body?
(BTW, there was a locking screw in this ring, which I've removed already)
http://forum.mflenses.com/jumploader.php
Comments invited.
Cheers,
Edmond.
edit1: I've uploaded the picture, but can't see it. Clearly something went wrong. Sorry.
edit2: I've put it here as well: http://www.data-odyssey.nl/images/CZJ180.JPG (removed by now)
Last edited by Edmond Stuart on Fri Jan 09, 2015 8:36 pm; edited 3 times in total |
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fuzzywuzzy
Joined: 18 Dec 2010
Posts: 1258
Location: Down East, Canada, eh?
Expire: 2013-11-30
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| Posted: Wed Jan 07, 2015 5:00 pm Post subject: Re: How to remove the Mamiya adapter on a CZJ 180mm f2.8? |
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fuzzywuzzy wrote:
Try posting the pic again, your first post can't contain images or links (antispam measure).
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I welcome C&C, editing my pics and reposting them on the forum is fine.
NEX-F3
~~~~~~~~~
CZJ Sonnar 135/4, Biotar 58/2, Pancolar 50/2, Tessar 50/2.8, Flek 35/2.8, Flek 25/4
Super Takumar 135/2.5, 135/3.5, 100/4 bellows, 50/1.4, 28/3.5
Helios 58/2, 3M-5A 500/8, Mir 20M
Vivitar Series 1 70-210 - - - - - - - - Nikkor 200/4
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Hexanon 28/3.5, 50/1.4 |
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Edmond Stuart
Joined: 07 Jan 2015
Posts: 4
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| Posted: Wed Jan 07, 2015 5:11 pm Post subject: Re: How to remove the Mamiya adapter on a CZJ 180mm f2.8? |
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Edmond Stuart wrote:
| fuzzywuzzy wrote: |
| Try posting the pic again, your first post can't contain images or links (antispam measure). |
I've tried that too, but it doesn't work for some reason. |
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Gerald
Joined: 25 Mar 2014
Posts: 1196
Location: Brazil
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| Posted: Fri Jan 09, 2015 12:07 am Post subject: |
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Gerald wrote:
Note the photo below. The Sonnar 180mm F2.8 lens may be a different model of yours, and the adapter is a P6 to M42, but I think that the picture is good enough for understanding the procedure of separating the adapter from your lens. The Zebra ring is what connects the lens to the adapter. To release, you must turn the ring in the direction indicated by the red arrow. If for some reason the ring was forced in the opposite direction, you will need a lot of force to loose the ring. Do not worry, there's nothing to break, but use only your hands, not any metal tool.
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If raindrops were perfect lenses, the rainbow did not exist. |
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Edmond Stuart
Joined: 07 Jan 2015
Posts: 4
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| Posted: Fri Jan 09, 2015 1:55 pm Post subject: Removing adapter CZJ 180mm |
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Edmond Stuart wrote:
Hi Gerald,
Thanks for reply. Now, at least, I'm pretty sure to which direction I should turn the release ring, but I still failed when using only my hands.
Of course, using some metal gear is a big no no. In order to be able to apply enough power, I'm more thinking in the direction of a leather strap or so, something that doesn't scratch the lacker etc.
One more thing: What about using penetrating oil and/or applying heat to the release ring?
Cheers,
Edmond. |
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Gerald
Joined: 25 Mar 2014
Posts: 1196
Location: Brazil
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| Posted: Fri Jan 09, 2015 4:48 pm Post subject: Re: Removing adapter CZJ 180mm |
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Gerald wrote:
| Edmond Stuart wrote: |
I'm more thinking in the direction of a leather strap or so, something that doesn't scratch the lacker etc.
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The leather strap could be a solution. Or maybe you could ask for help from another person, so each one can grip the adapter ring /lens with both hands, and exert more force.
| Edmond Stuart wrote: |
One more thing: What about using penetrating oil and/or applying heat to the release ring?
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I do not recommend applying oil/heat because I believe the ring is simply stuck due to unintended excessive tightening, and not to corrosion or something. The problem you are experiencing is common with the Pentacon breech-lock bayonet mount system.
Let me know if you succeed.
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If raindrops were perfect lenses, the rainbow did not exist. |
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Edmond Stuart
Joined: 07 Jan 2015
Posts: 4
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| Posted: Fri Jan 09, 2015 6:21 pm Post subject: |
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Edmond Stuart wrote:
It's loose now! 
Using leather gloves did the trick, which enabled me to put more force.
Many thanks for your help.
Cheers, E. |
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Gerald
Joined: 25 Mar 2014
Posts: 1196
Location: Brazil
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| Posted: Fri Jan 09, 2015 7:16 pm Post subject: |
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Gerald wrote:
| Edmond Stuart wrote: |
It's loose now!
Using leather gloves did the trick, which enabled me to put more force.
Many thanks for your help.
Cheers, E. |
Glad to hear that!
Enjoy your lens!
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If raindrops were perfect lenses, the rainbow did not exist. |
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