How to maybe remove Haze in the Leica Summicron ridig 11818 1:2/50 version II (NOT good at all..)
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- Опубликовано: 1 янв 2024
- This old Leica Summicron ridig 11818 1:2/50 version II, have some serious Haze/fungus between the cemented inner back lens group, but sadly to say, I could not do anything to remove it.
The lens group has to be separated and then cleaned and aligned, and finally glued together, before it is useful again.
It's my intension that the video maybe could help someone, if they
have fungus or Haze on some of the other lens elements. 
Хобби
Like the new improvised tools. Reminds me of my helios40 with a smashed filter ring. Lens was clamped to the bench, bent my wrench and the sound was horrendous, I got the element out and cleaned the lifeform off. Very happy with it now.
Super helpful!
Thanks, very helpful video
I've read somewhere that a mixture of cigarette ash and water, very lightly scrubbed with the cleaning paper, may be able to give a slight re-polish to the lens surface. This would obviously destroy any coating that may still be on the lens surface. I would try it only as a last resort, in case the lens is definitely lost otherwise.
Hi Mike very good video and very well explained and filmed as usual. I get a Leitz 35mm which has the same type of haze so I will try to dismount it. I got another issue with a canon EF 80-200 f2.8L . The lens is old but used to work very well but recently I got an issue with the zoom ring which remains blocked near 200mm. The autofocus is working fine but it s now just a fixed lens. I read that this is a common issue on canon Tran standard EF lenses and it s usually linked onto some screws in the zooming group which become unscrewed and can t move anymore in the body (the issue was progressive which tends to validate this explanation). The issue is that I tried to dismount it by the rear (your videos on some other EF lenses were useful) and succeeded in retiring the bayonet and the first two rings but I am blocked at the next one , the one which Is holding the limiting focus area switch. Perhaps it’s the switch which prevents to retire this new ring but I didn’t find any video for this lens neither any service guide for it (only the part list and the exploded view which is not enough). Do you have access to this kind of service guide ? I know that Canon reserves them to professional repair stores but as this lens is too old to be repaired by them perhaps you know how to help me. I give you my PM (philmtx3@yahoo.fr) if you can help. Thx in advance.
Hi, I actually found a parts manual for the Canon lens here: lens-club.ru/public/files/pdfs/3036598eccb2b5966866c9141286f27f.pdf
I think, like other Canon lenses I have been into, that there have been some or many loose screws, and it’s probably the same issue in your lens.
@@mikeno62 Hi I found it too but it doesn’t make me understand how to extract the 3rd ring and yes I agree on the probable cause of the issue. If I can extract this ring and the following the focusing one I should be able to access to the faulty screws . Anyway thx for your search and if you find the repair guide thinkbti me ;)
Happy new year, Kenneth! this is an expensive lens! wow, one day, i can afford one!
Happy New Year Richard, I hope everything is fine for you and your family.
You are right this lens is normaly expensive, but there was a lot of Fungus on some of the lens elements, so I try to remove it for my friend, but sadly I could not remove it with different cemical stuff :-(..
Hello, thank you for your Video.
It is much easier. You can completely unscrew the front Optic.
It is often quite tight, but it can be completely unscrewed.
If you want , I can send you a video of it that I made.
Where can I buy this special wrench?! It's awesome.
I have made it myself.
I have 35 Summarit M with a bit loose focus ring...and it caused lens is missed focus... Do you want to try to fix it?😅
Have you ever de-cemented a lens group?
Not yet, but I have try to with other cemented lens elements with no luck, and I haven’t had the time enough to try.
But after working with this lens, I will definitely try harder to really figure it out soon.
Thought that I’ve seen your video about bonden lenses, where you tried reglueing them back. Or maybe it was someone else)
Well, I have not yet try to separate lens elements, but I will soon try it.
Ultraschall?
There is a chap in Taiwan who could deal with that. He is a master of bonded elements.
Do you recall the name or website to contact this person?
I will dig it out. He is great! Fixed a 16mm 3.5 nikon fisheye for me. Base price is about (was) $100.
Found it. lens-cla.blogspot.com/p/blog-page_19.html
lens-cla.blogspot.com
Pro haze tip: don’t shine an LED torch through your lens.