Remove rear group from Super-Multi-Coated Takumar 50mm 1.4

JoseVelasco · Joined: 13 Aug 2010 Posts: 8

Hello guys, I have dissassembled and cleaned (remove oil from blades) from Super-Takumar 50mm 1.4 succesfully, but now I am trying to clean fungus from Super-Multi-Coated Takumar 50mm 1.4

I see that the rear group in this SMC is different to how to remove in Super-Takumar.

I put a few photos for if any of you could help me..

Unscrewing this ring I can remove the rear and middle lens from rear group.

The next one shows I say:

The problem is: how to remove the front lens from rear group?

For the other side I see three little screws, but I am afraid to remove this to avoid broke the diaphragm.

Any suggestion?

Thank you very much!

kuuan · Expire: 2014-12-26

Hi Jose,

welcome to the forum!
you may have wondered why your photos did not show.
this is an anti spam mechanism for first time posters, next time you should be fine

JoseVelasco · Joined: 13 Aug 2010 Posts: 8

Thank you very much kuuan. Yes I wondered.

Okey I see the photos now! (thanks)

JoseVelasco · Joined: 13 Aug 2010 Posts: 8

Any suggestion how to attack the problem?

Thanks in advance. No one has cleaned a SMC Takumar 50 ?

Good night (from Spain)

sichko · Joined: 20 Jun 2008 Posts: 2475 Location: South West UK

http://www.mypentax.com/tak50_1_4.html

It might be of some help.

JoseVelasco · Joined: 13 Aug 2010 Posts: 8

I saw this web when I dissassembled the Super-Takumar 50mm 1.4, but I see differences with Super-Multi-Coated, concretatly in the rear group extraction.

In Super-Takumar 50mm 1.4, the rear group can be removed as a group unscrewing from the internal focus ring.

Super-Takumar 50mm 1.4

Super-Takumar 50mm 1.4

But in S-M-C I cannot remove the whole rear group, I only got remove two glasses one by one, but I need to remove the front glass (third from rear group the front glass).

Sorry I am not explain very good, I try to explain it better than I can.

So, thanks sichko.

JoseVelasco · Joined: 13 Aug 2010 Posts: 8

Add other view from the rear group.

It can see the third glass (I need remove this) and one metal ring, but it has not notches to permit remove it.

Thanks

JoseVelasco · Joined: 13 Aug 2010 Posts: 8

Anyone can help me? Anyone has dissassembled an Super-Multi-Coated Takumar 50mm 1.4?

Thanks Embarassed

martyn_bannister · Joined: 23 May 2010 Posts: 1151

indianadinos · Expire: 2011-12-05

Hi,

Just in case, i have found another tutorial here ...

Hope this helps ...

Cheers

JoseVelasco · Joined: 13 Aug 2010 Posts: 8

JoseVelasco · Joined: 13 Aug 2010 Posts: 8

soundsk · Joined: 14 Sep 2012 Posts: 6

Hi everyone!

Sorry for bringing this thread back from the dead, but it is quite relevant to my current situation.

Does anyone know how I get to the stage of the first picture on this thread?
I have successfully removed the trim ring and the front group, reaching the diaphragm. I cleaned a small bit of fungus on the concave element just after the blades.
However there is a bit more spawning on the last element of the rear group. I need to get to the inside of this element, and I see he did so easily. I'm assuming I need to remove the focus ring and aperture assembly to get to this to unscrew it, or is there any other way?
How do I remove the focus ring and subsequent parts to get to the rear group?

Hope someone can help, thank you!

--
This is my first post, so here is a bit on how I ended up here:
A few weeks ago I bought a Pentax SP1000 at a local antique's fair. It had a Carl Zeiss Jenna DDR 50mm f/2.8 mounted on it, and I bought at the same time a Soligor 135mm f/3.5. I then got M42-EOS adapters and tried the lenses on my old 350D and my 5DII. I loved it!
In the meanwhile, I also started using the film Pentax (had never used film before), and I started developing my own BW film at home, which I'm also loving, BTW!

Having found this whole new world of amazing glass at low cost (when compared to all the L glass I own), I have since then bought a few more things: A Canon Elan IIe, a Carl Zeiss Flektogon 35mm f/2.4, an SMC Takumar 50mm f/1.4 (the later version) and a Spotmatic SPII with a Super-Multi-Coated Takumar 50mm f/1.4 (the one I'm repairing) and a Takumar 85-210 f/4.5.

If there is anything to particularly watch out for on any of these, please let me know.
Cheers everyone!

soundsk · Joined: 14 Sep 2012 Posts: 6

Well, in the weekend I took apart an m42 zoom lens and cleaned all the elements. It was good training and if it went wrong it wasn't a big loss.

Today I had a crappy day but I got home and decided to tackle the takumar. It's pretty simple, after having done the zoom. Cleaned the elements, it's very good now. I do think there still is a bit of yellow on the inner elements, going to put it in the uv box again to clear the rest.

Cheers!