Pentacon 29mm : Disassembly, cleaning, and Haze removal
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- Опубликовано: 21 авг 2020
- Hello friends,
The other day, I went to a flea market, a beautiful day, and I was lucky to find this most unusual vintage lens; a Pentacon 29mm f/2.8 on M42 mount. It was extremely dirty, but also very cheap. Got it, cleaned it, and discover that it was also dirty on the interior and had some haze as well. So, I disassembled it a give it its old glory.
It can be adapted to a modern camera and make some cool pictures.
Keywords: pentacon, Pentacon 29mm, pentacon 29, haze removal, lens repair, m42, M42, vintage lens, vintage objective, vintage glass, lens disassembly, lens cleaning, cool lens, lens fungus, fungus in lens, haze in lens, lens haze
Some useful stuff (I’ll get a small commission if you order thru any of the links):
Optical cleaning paper: amzn.to/2HXBgYI
Optical cleaning fluid: amzn.to/323HFci
Rubber tools: amzn.to/3mEcdco
Lens spanner: amzn.to/35VCYSL
Screwdriver set (includes J-tips): amzn.to/3LTPi9G
JIS screwdrivers: amzn.to/3mC06MQ
Scredriver set : amzn.to/3JHxPAY
(This set has J000, J00, J0, J1)
DONATION:
paypal.me/DiyExtravaganza1?lo...
If you find this video useful, informative and adds value to you (and possibly saved, or made some money by repairing the camera or lens), then consider donating to the channel 
Хобби
This was a great video, well explained!
Great, thanks !
Một ống kính đẹp của Người Đức Gecmany.
Indeed, a very nice lens. Cheers my friend.
I really enjoyed watching your video, it's like a meditation for me :) Great information too, thank you for sharing your knowledge and skills.
Thanks a lot, fixing lenses is a very relaxing activity in fact.
@@diyextravaganza You're welcome. I'm going to give it a try on a couple of old dusty Meyer Optic lenses, a 50mm and a 29mm :)
@@nigelgroves19 great, let me know the outcome, and remember to be zen while repairing :)
@@diyextravaganza Hello, So today I cleaned the glass (all of it) on a Gorlitz 29mm f2.8 - just tested a few snaps and BINGO! Clear, crisp and colourful. I'll need to strip it again as there's a very tight spot on the focus ring midway, but now I know the glass is crystal I'll scour the web for info and pull it apart again looking for clues. And yes, totally zen vibe from start to finish :)
Thanks again for being an inspiration to me.
@@nigelgroves19 Great news. It makes me very proud that my work inspire others !
I have this lens and one of the sides in the frame gets out of focus (about 1/5 of the picture), would you say that's something difficult to repair?
I'd say you need to realign the lenses. Not very difficult I think. Cheers.
Thank you for your tutorial, however I'd like to regrease the helicoid too - have you got any experience with that?
I have done several helicoils but not this particular one. Anyway, the golden rule of working with helicoils is to mark the point where it goes out, take pictures (or make a video), clean well, good quality grease and re-assemble.
@@diyextravaganzaThank you for your advice. I succesfully managed to do the job but it took me a good 5 hours, still I'm happy I did it!
@@natanvance great, the more you do it, the easier it will become :)
Is that possible to modify easy way this lens to focus to infinity on modern cameras (with adapter)?
the focusing at infinity is given by the flange distance, you can test that by moving by hand the lens in front of your sensor. Then adding a adapter with the right distance is trivial I'd say
@@diyextravaganza On market are only one kind of adapters with (i think) the same distance to a sensor (anyway, no seller sharing information of adaper size/parameters). In Helios 44/2 i found tutorial how to modify lens itself to reach infinity - it works. I hope Pentacon have the same posibility.
@@dziarsky If it is on a nikon dslr, you'll never reach infinity, you can reach some 10m by offseting the rear lens using for example a o-ring