Remove old fungus with Hydrogenperoxide in Pre-Ai Nikkor 50mm 1:1.4

[@swaewithme]

Who else was holding their breathe when he was taking the compass to the retaining ring? My god the suspense. This is great content!

[@tmac6949]

This guy knows his stuff. Applying that much pressure without the tool slipping is not something you want to try without a lot of experience. Thumbs Up

[@mohdfazili6116]

Kenal bare ore kato

[@Emilmarch]

The “hehehe”after the successful cleaning made me happy too 😊

[@docchocobo]

I've always believed that you should know how to work on the equipment you own.your video not only taught me how to clean these lenses, but it also taught me how to get them apart to work on them a lot better than a lot of other videos I've seen. And with basic tools that anybody can get their hands on. Thank you for such an informative piece of content.

[@davelordy]

Weirdly relaxing, I don't even own a lens to clean, but your voice and watching the process was sort of addictive ! : )

[@JamesE707]

Well done Kenneth, as we say in English - "nothing ventured, nothing gained". Your videos are a great guide, cheers!

[@mikeno62]

Thank's James :-)

[@adrinathegreat3095]

Good to see someone carrying out professional work without all the professional tools, which are sometimes very expensive and little used. A Job well done, without someone saying how you have all these crazy expensive specialist tools, just straightforward equipment anyone may have or could buy cheaply, plus a steady hand and a little bit of know how;)

[@77.88.]

Practice makes perfect and most ALL beginners make mistakes, even the best goof once in a while?

[@davebellamy4867]

Wow! I just wrote a comment on another video saying that I had a fungus spot on a Zuiko 50mm f/1.4 and your video appears on my recommended list. I need to get the courage to dismantle it. This is a really useful video!!

[@123svx]

Excellent démonstration. Complete with problems and how to overcome them. Easy to follow. Lots of sticky steps but done with such patience. Will tackle my Nikon fungus infected lens with confidence!

[@Shiznaft1]

Thank you for adding the English commentary, I really appreciate it. I find your videos to be very informative and well done.

[@S3l3ct1ve]

I love how simple these old nikkors are built. They are very easy to dismantle, after you take each part out it looks like you are doing it on your own without much thinking. After I cleaned my 55mm 1,2f Pre AI it felt like I knew exactly how to dismantle it while I was doing it for the first time. Cant say the same thing about Russian Helios 44-6 for example... Quite tricky focusing helicoid, easy to take out hard to set it back correctly.

[@richardsilva-spokane3436]

You give me great self-confidence? Those rubber tools are amazing! 👍👍👍👍👍

[@valentinvasilescu5558]

I watch at this video almost 100 time. It is fascinant, you are a good teacher. Then I want to test my skill and I buy the cheapist but lovely lens nikon 50mm f/1.4 from Japan on e-bay. A lot of fungus inside etc. Today I received at post office and now it is clean. First impresion : it is very small, on our video I see it huge. It seams fragile too. Unfortunately my variant is k2, a bit different of this, with many modernisations. But your lessons help me a lot. Especialy patience and acetone all the time. Thank you.

[@mikeno62]

Wow, that's great to know Valentin.

[@H.E.J.S.A.N]

On Ebay this lens is now worth at least 2x this. Cleaning the glasses took just a few minutes. I like this channel.

[@thomasmackenzie3110]

I love the high tech lens disassembly tool, with flowers yet ! You could spend $500.00 and not get a better tool, and it can’t damage the device, amazing

[@adrianharris9091]

Well done. I enjoyed the part showing where you had most difficulty - because of the threadlock - removing the ring, because it helped me learn not to expect that it will always be easy. and that I must be patient and keep trying.

[@mikeno62]

Yeah, it's not always easy to repair lenses and cameras.

[@sinargbelawan1958]

hebat dengan postingan ini aku mungkin bisa membongkar nikkor 50mm f 1:1.4 sendiri tapi yang saya inginkan seperti karet pemutar tak ada dijual di indonesia sehingga terpaksa aku mesti kreatif meski tak sempurna yaitu dengan roda sepatu anak yang aku rusak. sukses utuk pembuat tutor postingan ini ..... salam hangat dari saya, tk

[@northstar1950]

I enjoy watching these videos and it is much better to hear you voice, watching your videos has led to my wife and I removing the front element of a Leitz Elmar F2.8 for cleaning purposes. Thanks for your inspiration.

[@fractalofgod6324]

Very helpful visor and your voice is so soothing. Thank you for sharing.

[@therealchickentender]

I've watched this one several times in the last 2 years. There's nothing like restoring one of these old pieces to shiny optical loveliness, especially when they looked a bit forgone.

[@D70Dug]

Having lived and worked as a photographer in tropical North Queensland I take 3 precautions against fungus 1) if I shoot in damp or WET conditions I always have a few KG of indicator Silica Gel in a large airtight screw lid container ALL my gear goes into the container to be thoroughly dried out and my camera bag is also washed and dried. 2) Every year all my gear is placed in direct sunlight on a warm but not hot sunny day. The UV of sunlight kills mould and fungus as well as the spores. 3) never store camera gear in dark airless cupboards etc make sure they are in a clean dry warm area with good air circulation, fungus loves damp dark humid spaces ! cure is great Prevention is better

[@un65tube]

Very instructive video - so many good tips! Thank you very much for letting us have a look over your shoulder. Many greetings from Germany.

[@mikeno62]

Thank's and it's great it can help you :-)

[@wintersthrall]

*Love* watching your attention to detail as you do these.

[@stevejeffries1603]

Great video I wish i had your confidence and skills What a menace fungus is

[@Richard-mz7qu]

Well done! I have the same lens and I am happy that there is no fungus among us in there. I hope I never have to perform this process, but if I do, you have helped me. Thank you.

[@mopunchstudio9289]

This is great. My repair guy fixed a nikkor 50mm 1.2 for me. He used to work for Nikon so worth the money for me for the peace of mind.

[@Tricyklist]

When re-inserting a lens into its retaining ring you should *always* place it on a soft pillar and then lift its ring up around it until the lens lifts off the pillar. The retaining ring must first be placed the correct way up on the table and surrounding the pillar. The pillar can be anything smaller than the lens but soft enough not to damage the glass lens. Tissue will easily protect the lens from the pillar. A shot glass or a small plastic container will do for a pillar. Dropping a lens into its retaining ring is very likely to make it twist and it may lock solid and even chip the edge! Edge chips are very common on old telescopes.

[@shaunmichaels6801]

Thanks for this advice👍

[@massimozanardi6457]

Awesome, great work. Where did you get the rubber cones to dismount the various rings? Thank you

[@synaptophysin]

Very nice, thank you. As others commented, the narration adds greatly to the video.

[@JamesE707]

Just completed the oxidation and removal of fungus on my Nikkor 50mm f1.8 lens at back of the front element with 6% hydrogen peroxide, and it worked! Thanks Kenneth!

[@mikeno62]

WOW WOW that's great to know James, I think it's very interesting when it work's and one have an almost "new" lens. Cheers Kenneth

[@1967250s]

Hello. I worked in a camera repair store in Washington, D.C. for a year fixing cameras, from cheapo snap shot, to Leicas and Exactas. The lens technician, very nice quiet guy, showed me some of his repairs and cleaning lenses. From what I remember, he never used lighter fluid on the actual glass element, only glass cleaner. Lighter fluid is an oil, and leaves a film on the surface. So, unless you clean that off, it can change the performance of the glass, and may actually promote fungus or clouding. Otherwise, a nice tutorial, and I will have dig out some old lenses and try this. It makes so much sense to use peroxide, but I have never heard of it.

[@birdtower2801]

I'm sorry but you're wrong about lighter fluid. Lighter fluid, as all petroleum distillates, is not an oil. Quite the opposite actually: they are very good solvents, furthermore, they evaporate quite rapidly, so there's no need to wipe them off. That said I don't know if lighter fluid is adequate for cleaning lenses.

[@richpaul8132]

Excellent work! Thank you for that very useful tip. I have a Nikkor lens (35mm - 70mm F2.8) that someone sold me a year ago and they misrepresented the extent of fungus damage. In fact, they claimed it had none and their images of the lens were taken in such a way as to not allow the bidder to see the fungus. Long story short, I should have just returned it but for some stupid reason, I just complained that it wasn't worth the price I won it for and suggested that I would keep it if he refunded $50 of the $250 I paid. I think I was tired and thought he would object and reject my counter offer. Then I figured I would send it back and be done with it. However, he accepted the counter offer and refunded me $50... I am now stuck with a lens that I couldn't sell for 1/10th of what I paid for it. I'm going to try to use that cleaning process. I have many tools and am a first class machinist (retired) by trade. However, I'm going to have to find a set of rubber cups like those that you used to unscrew the various lens sections. I need to see if you happened to list where you got those from. I should be able to find a spanner wrench somewhere but if I can't, I can always make one. The 35-70mm F2.8 lens was a good lens in its day but the fungus really made it practically useless. The camera I shoot with most of the time is heavy enough, (Nikon D4S), and this 30/70mm lens is quite heavy for such a small lens but I may keep it if I can clean it. Thanks again, Rich

[@Laz_Arus]

Fascinating. Thank you for putting this video out. The prospect of dismantling a lens, and hopefully putting it all back together, seemed rather daunting before watching this. Although I wouldn't necessarily try it myself, it's good to see it's not 'brain surgery' skill :) More modern lens with all the electronics would be undoubtedly more of a challenge I can assume though.

[@CarlosGarcia-lh5jh]

Hello Milenko, I just want to thank your remarkable intelligence, having no appropriate tools and sometimes guessing the result you come out with success, never has been easy to remove fungus from a lens indeed is sometimes very difficult myself couldn't clean my Nikon binoculars from fungus traces, all good optics are made in a milimetrical way disassembling could be sometimes easy, putting all together again is not. Forget about the I-Know-All guys, they maybe professionals on it, you are the genious here, THANKS for demonstrating that the Okhams razor works here as in all big cientific deals+++

[@drakedorosh9332]

For the rings I made my wrench out of a cheap pair of vernier calipers. I had to square off the inside measuring pieces but it was worth it to have a tool that doesn't flex and slip. Those calipers you used are fine because of necessity but if anyone is looking around for something to sacrifice to the job - file up the vernier calipers for 12 bucks or less.

[@soundwavedesign9638]

An excellent and informative video, good to see the tools you are using, many thanks.

[@jsof2]

Superb video! I really like your English commentary - it adds so much.

[@JoshJourney]

Fantastic video showing a rather tricky procedure. Not too much gear and straight to the point.

[@mikeno62]

Thank's Josh.

[@AleksandarSavkov84]

Thanks for this video. I was listening to it while taking an old Practiker lens apart and it gave me a few ideas for how to go about it. I wouldn't have known about the hydrogen peroxide too.

[@Subgunman]

This is interesting! I pulled out my Tassco spotting scope last week and to my surprise the zoom eyepiece was sporting the same symptoms. Didn't know what it was other than moisture related. Cleaned affected lenses with just glass cleaner and allowed them to dry. Reassembled and no issues. Now that I know its fungus relatedI I'll bring out my UV Prom chip eraser and let it shine down the apertures from both ends for a while followed by placing it in an airtight container with silica gel kitty litter that I have dried even better, fresh out of the bag and holding in a sealed mason jar until I need to use it. Great video, one recommendation is that the retainer ring used on the last lens group appeared to have been scratched when the dividers slipped. You might want to give it a coating of lamp black or what is more commonly called soot. You can use a tall candle flame that is smokey and give it a coat to kill the shininess of the metal. This way you will not experience strange reflections within the lens.

[@sfhie]

thank you for this demonstration! I was able to successfully remove fungus off my lens myself.

[@omnymisa]

I would only ask to see some pictures from before and after the clean up, thank you very much for the video! :)

[@damutoob]

Thank you for this wonderful video! I am just starting to try my hand at making cinematic short films. The kit lens with my dslr is not the best, but I had my old camera bag from the 80’s and 90’s in a closet. $20 adapter rings would save many $1000’s in new glass. Unfortunately all have gotten fungus in them. The perils of living in Florida, I suppose. But now I’m going to try my hand at cleaning them so I can use them. Again many thanks!

[@mikeno62]

That sound's great with the use of old lens to make video's and film's, some of the old lenses has a great bokhe and they can render the pictures very good and different compare to new and crystal clear (but a little boring..) lenses. It's not a hard job to fix the old manuel focus lenses, one just have the correct tool's and the correct cleaning fluid. Here is some link to some repair tools. Japan Hobby Tool rubber cone: www.amazon.com/Japan-Vacuum-Camera-Opener-Repair/dp/B0013HFYKK/ref=pd_sbs_469_1?_encoding=UTF8&pd_rd_i=B0013HFYKK&pd_rd_r=RKSF5A4YKT9GV3E1382C&pd_rd_w=5H58m&pd_rd_wg=DBny2&psc=1&refRID=RKSF5A4YKT9GV3E1382C 18 different size rubber repair tool's: www.amazon.com/Sizes-Lens-Filter-Wrench-Rubber/dp/B00988D1BK/ref=pd_sbs_469_2?_encoding=UTF8&pd_rd_i=B00988D1BK&pd_rd_r=RKSF5A4YKT9GV3E1382C&pd_rd_w=5H58m&pd_rd_wg=DBny2&psc=1&refRID=RKSF5A4YKT9GV3E1382C Divider Caliper Wing Compass: www.amazon.co.uk/Divider-Caliper-Compass-Marking-Machinist/dp/B015CN9A8M JIS cross head screw driver's: www.amazon.com/Moody-Tools-58-0219-Chromium-Screwdriver/dp/B004PGO1T6/ref=pd_sim_421_6?_encoding=UTF8&pd_rd_i=B004PGO1T6&pd_rd_r=775KBDR03D8PMMEZWKFJ&pd_rd_w=ti7yC&pd_rd_wg=s2a40&psc=1&refRID=775KBDR03D8PMMEZWKFJ Lens cleaning wipes (PEC-PAD): www.amazon.com/dp/B0161VIZZ8/ref=sspa_dk_detail_3?psc=1&pd_rd_i=B0161VIZZ8&pd_rd_wg=ZTxxY&pd_rd_r=RNY8S6Q1V5K18K3F61VZ&pd_rd_w=2c1Oy And you will also need some Isopropylalcohol 99% And sometimes Lighter Fluid that is very good to clean lens element's NOTE: Do NOT! use Acetone on platic part's, it will damage / melting the plastic!!!

[@mc-ec3bu]

Thank you kind sir a lot of good information and no music ..wonderful.

[@isaacsnowhite104]

Very useful..Thank you for taking the time to post.

[@MichaelRusso]

Nice video. Unfortunately if the fungus has been in the lens for too long, it eats into the optical coating and creates a permanent haze. I acquired a couple of lenses with that condition and beyond repair.. One lens, I was able to easily pull the front element out (200mm f/2.5) and clean the fungus off.

[@emagowan]

Fascinating to watch. I've been doing optical repair work for 45+ years on everything from camera lenses to submarine periscopes and mostly focus (yeah, I did that) on astronomy gear now. Most fungus problems I've encountered were on binoculars and telescopes that were not well cared for. I've used peroxide...but I have to say this is the first time I've seen lighter fluid used for cleaning. My final cleaning is always with acetone or methanol. You've shown me something new and interesting and for that I thank you.

[@mikeno62]

Thank's Ed, it's good if some of my experience can be helpful for other's, even those people who has been in that industry for many years. I will continue learning about this stuff, and look for new way's of doing thing's even if it's not the "correct" way, I mean, just for give it a try, and in that way do a lot of error's and learn from that.

[@lib3rat3]

im dreading cleaning my vintage lenses now.... great video sir.

[@hasso0n]

I used 9% peroxide to remove fungus from a Yashica electro 35, it cleaned up all the fungus when isopropyl alcohol wasn't working. Thanks for the tip.

[@trident8872]

Did you check the coatings of the lens are as it is or it's gone??

[@hasso0n]

@@trident8872 it didn't affect the coatings when I did it. I just checked it 3 years later and it still looks clear, no haze or pinholes developed in the coatings over time. Hydrogen peroxide reacts strongly with fungi but doesn't do anything to glass or lens coatings. Just don't use isopropyl alcohol, that will actually break down the coatings.

[@trident8872]

@@hasso0n oh! Thank you

[@VirtualGuth]

Fantastic! Thank you for the commentary as well. This was a very informative demonstration.

[@mikeno62]

Many thank's, and I just now upload a new video about, Remove old fungus with Hydrogenperoxid 3% in Nikon Nikkor Pre-Ai 200mm 1:4, it is also a very intersting video on trying to clean a lens from old fungus on the lens element's. Cheers Kenneth

[@robertw9677]

I was going to buy a lens with fungus issues and could not find a photo shop that would do what you showed seemed very straight forward process to me

[@mikeno62]

Of course with the right tool's, it is actually "Pretty straightforward", one just have to be careful when working close to lens element's, but it's great to see how good those old lenses can be after a service like this.

[@joeyrodriguez7125]

Watching this was stressful lol but the end result was extremely satisfying. I want to do this to my favorite radioactive Super-Takumar 50/1.4 M42

[@mikeno62]

Thanks Joey, and yes it can be a little tricky to cleaning lens elements. And about the Super-Takumar 1:1.4/50 M42, I have actually made 2 videos about taht lens, the one about cleaning the lens elements, that you can see here: kzbin.info/www/bejne/aIrHaYGtedmch8U And the other which is about oil on the aperture blades that you can see here: kzbin.info/www/bejne/aKW0foSPmrdln8U

[@MrHik6]

Thank you very much for sharing this knowledge. This was very useful to me!

[@stephanhartmann1128]

You're da man... Nicely explained, I have some Carl Zeiss Jena lenses with fungus (the famous 2.8 / 180 for 6x6 e.g.) which I have new hope for now. Thank you a lot dude.

[@kmerkingdomfilms]

Thanks for sharing. I've been looking for this kind of work process of how to work on old lenses for quite sometime now. This is very helpful for me cause I still use old lenses with my DSLR for shooting video. Please, show us more of how to do more works to save old beautiful glass and f-stop like the high speed lenses. Again, thank you very much for your informative lesson.

[@brianrae1624]

when the fungus is really really bad it will etch tracks in the glass that look like a snail went across the glass. I got a collection of enlarging lenses for free and half of them were bad with fungus and a few were salvageable but several had really bad etching.

[@chutirdeshe2589]

wonderful step step by step tutorial, i was looking for ways to clean few of my old nikon and PK mount analogue lenses. Thank you again.

[@georgesaad651]

I loved watching this man, do more please!

[@mikeno62]

Thank's George, and I will make more video's when I have the time.

[@LunarGlowMedia]

Watching you really torque that lens around 10 minutes in gave me the same sort of anxiety I get when I watch people do dangerous shit for the lulz. You're the expert, so I'll trust in the process lol.

[@karlminehart1193]

Great video, thanks for posting it.

[@levanthasis]

Wonderfully educational and instructive video. Thank You for posting!

[@mikeno62]

Thank you :-)

[@apistosig4173]

Very very interesting and educational. Hydrogen Peroxide is interesting stuff - I use it (at the same percentages as you use) to clean my orchid roots when repotting. I love those old lenses, I use old Canon's and Pentax cameras - the glass is fabulous.

[@bigstick5278]

This works, fungus webs on the rear element of a mint condition 135mm f3.5 for $20.00. Look just like this. Spanner wrench is a must to have. It worked now it's crystal clear. 9:58 the death grip, i always am waiting for it to slip and take out my glass.

[@foxman362]

this video help taking a part toklin 500m mirror lens i had removed fungus on the lens and the mirror with 50% isoproppyl alcohol it did kill fungus.

[@HobbsBhipp]

Thank you very, very, very, very much; I wish I knew this ten years ago because of the several quality used lenses I turned down from buying secondhand.

[@WEDDINGNEWS]

5:55 what is that black color round holder. pls mention the name.

[@nigelgregory3142]

Cracking video so well explained. Going to find some old secondhand lens to practice on first! Cheers!

[@anthonycongiano8890]

Well done and talk about persistence! Excellent!

[@fusion-music]

Very useful and thorough video with links.

[@Fk67Lg]

I never knew you could clean up a lens with fungus wo easily. Very informative and educational! YOu are great! Thanks for so much new information, and thanks for your Amazon links below description. I see many tools and greases I thought were impossible for me to find in a store. Much thanks and live well sir. By the way do you also show how to recement objective lenses where canadian balsam bonding has failed?

[@taz24787]

Great vid! ... One Q, shouldn't you have tried to clean residual fungus and spores from the elements chambers? Thx!

[@andrewf.7813]

you make it look so easy...

[@Geoff]

when I reassembled my lens, it now focuses at infinity before the infinity mark on the lens. It reaches infinity focus in the middle of the focus ring and goes out of focus again as I turn the lens towards infinity. However, the aperture lever opens and closes the aperture correctly. I think I have assembled the lens while the focus ring was not lined up correctly with the lens markings even though the aperture is working correctly.

[@mikeno62]

If it can help you, I have some time ago made a video where I re-lube this lens so maybe it can give you some information about the focus problem: kzbin.info/www/bejne/oHy4kqNrpdeAf5o

[@steveramsdell1455]

Just found this. Very nicely done. Thanks.

[@kennuf1]

I appreciated your instruction. I am impressed by the various sizes of rubber "cones" you used to grip the various rings.. I would appreciate knowing a source for them. Thank You.

[@villemononen5303]

They are mentioned in the video description, here the link: www.amazon.com/Japan-Vacuum-Camera-Opener-Repair/dp/B0013HFYKK/ref=pd_sbs_469_1?_encoding=UTF8&pd_rd_i=B0013HFYKK&pd_rd_r=RKSF5A4YKT9GV3E1382C&pd_rd_w=5H58m&pd_rd_wg=DBny2&psc=1&refRID=RKSF5A4YKT9GV3E1382C

[@aussiegoosebumps]

Great job, well done, fantastic video explaining how to.

[@j.d.hughes3728]

Great video and very informative, even though I winced when you were using metal tools with force on a glass element! Otherwise, many thanks and I will dig out my 1960s fungus infested lenses immediately.

[@brmh1667]

Hmm, I might just have a go at couple of old OM1 lenses that have become inhabited by unwanted life-beings! Thanks for a great video.

[@DrAZ-uf5tx]

Great Instruction. It gave all details and hassles you have when cleaning a Nikon 1.4/50 . I just could not understand why he used "lighter fluid"?

[@mikeno62]

Lighter fluid takes away the rest of oil film.

[@alexparson4472]

Great job. I wonder if you could have used vinyl gloves and avoid using metal tongs to hold lenses

[@pugazhenthipandian9040]

What liquid in the glass bowl and one tissue paper or what is that dipping the optical... What is that liquid... Tell me pls 🙏🙏

[@77.88.]

Thanks for the detailed information!

[@daniellindsay733]

A very important issue -- you must do this as soon as you see traces of fungus. Fungus excrement is a glass-etching acid that will destroy a lens. You cannot repair that level of destruction. But at least with these techniques you can get to the problem!

[@tomallen6073]

Do you know this from personal experience? Or just learned this off the internet?

[@jesusfuertes2495]

It is very very very interesting work. Many many thanks for it.

[@girlinagale]

I have a mid 80s Nikon fm2 with fungus in the lens and mirror. I'd love to have it cleaned.

[@dejayrezme8617]

Thanks for the video! How likely is it that the lens has the same optical parameters? I figure it's possible that you get slight misalignment when putting it back together and the optical path is slightly different.

[@mikeno62]

In my opinion, there should not be a problem with misallignment (I can be wrong..) but after trying the lens after the cleaning, it performs just perfect and with a really nice bokhe.

[@hgrunt100]

It's hard to imagine, seeing as the nature of these lens' are very modular in there construction. The lens elements will always seat in the same way, or it won't fit together. Perhaps microns of difference depending on how tight the threads become? I'm not entirely sure. there isn't a lot of places on this lens at least that seem to require a pre-requisite knowledge on element placement, because it all screws in.

[@paolomesseca8679]

I enjoy very much your video: please tell me what do you do with COLLATED elements. Do you soak them to? Thanks

[@roberte.andrews4621]

Fungus spores create hydrofluoric acid. It is so strong, it actually etches the glass itself. Hydrogen peroxide can remove superficial fungus tracks, but cannot undo the damage to the lens surface. Or to the lens coating, which will be removed by attempts to polish the lens object. Carl Zeiss recommends you avoid use of air-tight enclosures or organic material in cases. I use neoprene lens pouches. Zeiss also suggests UV radiation (as in noonday sunlight) to front and back lenses openings periodically. I expose my lenses to this treatment a couple times a year, since humidity is not high here and I don't tightly seal my camera equipment cases, but allow a little airflow. In the tropics, UV treatment probably should be done monthly. 15 minutes is probably enough. Desiccants have been used for years in camera cases and in shipping containers to retard growth of fungus spores. Camera stores look for fungus tracks before taking a lens on trade. Unless the lens is rare and valuable, fungus in a lens makes it unsaleable or suitable only for the mechanical parts. Its value is greatly reduced.

[@megamediker]

great movie, I did learn something important, thank you

[@gabriel_abe]

Thank you for sharing this treasure!

[@TPRNOE]

I love the video what I don't get is why the lighter fluid what does that do ?

[@mikeno62]

The lighter fluid makes the final cleaning if there is any oil film on the lens elements.

[@jolllyroger1]

Should have cleaned the aperture or in use the morning aperture will redeposit the dust back onto the lenses...I would have cleaned the entire lens housing while I had it apart ... if the lenses are glass which those should be acetone would clean them quite well.... after reassembling the rings you put acetone on the same spots you should reactivate the adhesive and it should lock again

[@NoosaHeads]

Remarkable. I thought that one fungus got in, the lens was permanently destroyed.

[@Chris-ZL]

was that fungus or decayed coating?

[@adad-nerari4117]

Very interesting and informative video,thank you very much. Is there a risk to damage the coating of the lenses with hydrogenperoxid and gas for lighters ?

[@benisboy2697]

Lighter fluid combined with friction of the mechanical cleaning surely can wipe away soft coatings of older lenses. Be careful!

[@AlanColePhotography]

Many thanks for your time and expertise!

[@KRAFTWERK2K6]

I HATE GLASS FUNGUS >_< And any method to get rid off it and clean the lenses again is more than appreciated. It just sucks that taking apart the fragile lenses is always such a delicate endeavor where soo many things can go wrong. Especially when you wanna put it back together again.

[@tlight901]

Excellent video, I didn't think I'd watch all the way through as my lens doesn't have this issue...then I got hooked. Great stuff. You wouldn't know how to reset infinity focus on this lens do you? I bought exactly the same lens as you have there, it's immaculate but it won't focus beyond around 7 metres wide open.

[@mikeno62]

I have already made a video about how to re-grease this lens, so maybe it can help you, you can see it right here: kzbin.info/www/bejne/oHy4kqNrpdeAf5o

[@matthewchen1006]

Hi there, what is the difference between alcohol and hydrogen peroxide in lens cleaning?

[@johnberry788]

great videos can you help I have a 180mm Mamiya lens with fungus, the front element glass seems to have fungus in the glass just wondering if the glass is one piece, also back element glass cant get holding ring to turn also has fungus, hope you can help Many thanks John.

[@ivanzivojinovic1606]

Sometimes you use hydrogen peroxide and sometimes lighter fluid. Is there a difference and how do you determine which one to use and when? Thanks

[@mikeno62]

Well, from my own experience during many many lenses, I better understand more and more that if the fungus will not go away with lighter fluid (or other cleaning solutions), then it's time to use Hydrogen Peroxide, it's sometimes by try and error, but most of the time the Hydrogen Peroxide 3% will get the fungus away. Sometimes I also try to use "Eclipse" sensor cleaning fluid but it's not very good to take away the fungus, but on the other hand, it's a good lens elements cleaning solution. I will continue trying other stuff just to see what if there is other way of doing that process.

[@ivanzivojinovic1606]

@@mikeno62 ok so lighter fluid is actually easier on fungus than hydrogen i thought lighter fluid is a stronger chemical 👍🏼. Is Eclipse any good for haze? By the way, by looking at your video of cleaning Elmar, just cleaned Summicron-r by my self it was supper helpful and thank you for that. Keep up the good work

[@barrycohen311]

Whoa, great video but I would not handle the elements with metal tweezers. Perhaps a small wooden tweezers would be safer not to scratch it!