The hardest part is wiping the lens clean

I’ve got an 85mm lens that needs this on the rear of the front element. It was a good deal, but I’m not wild about it so will probably clean and sell. BTW, that whitening on your black rubber focus ring can also be cleaned, either with a clean dry brush (toothbrush, etc.), wiping with a very slightly dampened microfiber cloth (mild soap and water, hydrogen peroxide, or isopropyl all seem to work). I once tried to haggle a guy down because I said the whitening made the lens look old, he just cleaned it up before selling it and got his asking price :)

Two comments: 1. Cannot buy clear ammonia in Australia because they are scared it will be misused. You can only buy cloudy ammonia which means it has some soap mixed into it. 2. I like the use of hydrogen peroxide, quite clever to eat away at the biomass. I wouldn't have thought a weak acid and strong base would stay stable enough, but it looks like the two sit in a nice little sweet spot with their pKa so, cuddos. I have 4 lenses that I bought 2nd hand and they all have this fungus in them. Thankyou for uploading.

Shouldn’t you also clean the plastic part that touches the lense?

I'd be reluctant to do that with today's modern lenses due to the complex coatings on them. That mixture of NH3 and H2O2 could damage the coatings then you'd ruin an expensive lens.

I have an efm 15 to 45 experiencing the same issue..have to get mines clean... awesome vid dude

balls of steel. Mad props!

This point,I'm about to make is one of theeeeee most important. Before removing any lens element from a lens take into consideration,1 it must be replaced exactly as it was ,meaning a mark or piece of sticky tape on the lens outside surface to re align its orientation when re assembled. So let's say for example you place a sticker on the front element at the top in relation to being mounted on the camera.Then when re assembling, make sure the sticker is at the top when returned .If not done this way .Your perfectly clean element is now decentering your lens .as accurate as you may think these units are made they are culminated and balanced to project a perfectly cantered left to right up and down projected image before passing qc.Its easy to warm the tape from the outer element after assembly and clean with reccomended fluid such as lighter fluid ,which I reccomend .50 years tinkering makes life a great classroom, but never a courtroom .Good video .we're all still learning .

Sunlight also surprisingly works wonders

you should also mention that using Sun light rays directly on the lens also helps but that's a very slow process.

Just did this 50/50 mix with all 10 optical surfaces of a heavily infested SMC Takumar 1:1.8/55, but did it in a cheap ultrasonic jewelry cleaner. Seemed to work great. Fungus is gone, but it had been there long enough to leave micro-irregularities in the surfaces. But the lens is much better now than it was. The hardest part was wondering why that one part wasn't fitting right (to only remember, oh yeah, that's NOT how it goes).

I have a nikon 70-200 2.8 with mold on every element. Bought it cheap that way. Was going to clean it but MY GOD does it make a really awesome bokeh effect.... so I just leave it like that 🤣

Store them with silica gel water absorbers.

I buy and rebuild a ton of vintage lenses...some of them with extremely severe fungus growth in them. I've found that just 5 min in higher concentration hydrogen peroxide works great. Don't need the ammonia. Final clean with Zeiss lens cleaner. If you have fully sealed lenses or even if you take an older non_sealed lens (depending on the design) and add o-rings to seal it, you can reassemble it in a nitrogen purge box and avoid any optical changes in more extreme temperatures and fungus won't grow in it ever again unless the seals fail.

Dude...I am impressed

What started to me as a fun side project (adapting a Mamiya Sekor 38mm f/2.8 from a Mamiya 135 ee on a Sony E mount camera) made end up here, looking on how to clean fungus on a lens and also the internal segments because they appear to have stains of something as well (it's a 47 year old lens from a camera that belonged to my grandmother, it surprised me that it was not worse than it actually is)

BRO GOT A SIGMA CAMERA

This is like my film photography youtube channel because not only do they both feature camera lenses, but my channel is also growing fungus from the stagnation in viewership

“All clean” Huge dust particle: :3

Fungus gone, but isnt your lens coating gone as well?

What an incredible skill to have. Where can I learn this?

Disassembling took me 10 mins. But putting it back wiping away dust on the lens element took an hour and still looks imperfect. 😂

I’m gonna have to do the same thing i just received a used tamron 200-500 lens today and it came with fungus 😮

My lenses adapted to a symbiotic relationship with fungi😅

Really awesome, I’ve never seen this process done, very interesting to see 😮

Thanks I'd not risk dust and more spores getting in unless I had my own clean room. A bit of fungus has minimal effect on the images.

Fugus says ”SOS“

and tip how to store lens correctly? dry and shade and cool?

Excellente vidéo, très utile pour moi. Merci beaucoup !

Just used eye cleaner and never came back.. but hey.. it doing all this make you feel better.. go for it

Surprised to see this old lens on the interwebs. My focus ring also looks like this lol

I don't know how to do any of this; so I only use a 50mm f1.8 RF on my R6II. If it gets fungus, I'll throw it away and buy another one.

Wouldnt ammonia damage lens coating?

Can you do a comparison of the same lens, cleaned with the solution above after the elements are put back in? I want to see if there’s much visible difference without the coatings

People see the sigma in the middle😂

So I did do exactly this... but I cracked my 500$ lens...

That's not enough, the fungus reproduces via the spores. The object must be completely disassembled and cleaned, otherwise it will keep coming back.

I'm just here for the music.

I hate fungus so much. So freaking stupid how easily it can grow.

Pretty lucky my humidity almost never goes higher than 25%

Just wondering, how about the lens performance after that? Does it affect the coating as well?

Nice!

That name sigma

Just realize, why don't lens companies invent an anti fungus coating? Seems like an idea that can be implemented.

Have you made full length videos about doing this?

This is a great vid! But the geometry dash font killed me 😭😭

I wouldn't have the equipment to do this. TFS xx

just leave my friend alone..

Nice tools...

This make me to watch your whole vedios😅😅😅😂

luckily it was just the top element.

I don't even have a camera , neat

Take a macro shot of it

"Sigma" erm what the sigma

If Possible Please Make One Video How To Open Nikon P1000 Camera Lens??? Please

I asked a Canon official repair shop about treating fungus and they implied it would come back. Perhaps they don't use hydrogen peroxide etc. Are there any UK people that do this service?

missed a step post solution. You rinse?

You should have used SpongeBob's "30 minutes later" with Jaques Cousteau accent

I need this done on my sigma 24/70 for Sony emount

It will be good to put that lens under some strong UV light or at least on sun.. it will kill the rest

How about alcohol only?

you make it look so easy, I'm trying to open mine with the rubber tool but with no success!! is there a trick? I have the SIGMA 56mm lens for E-mount

Won't the peroxide eat away any IR type coating on the lens?

I don't have that remover you have sad 😢😢

Tool names please

Warning ⚠️ don't try this at home always seek help of a professional. 🥂

That doesn’t strip the coatings?

What if it’s between the middle elements.?

How do you clean dust from inside your lens? I got dust in a few of my lenses and thought about cleaning them myself.

Cool but what's the soundtrack?

Now do the same with my Summicron... :/ please

Come on, did u at least take a picture with it on?

I don't have the tools to get the glass out hopefully that doesn't happen when I get a camera

Where can you buy that tools that opens the front glass??

What about haze

Me who is scared of wiping lens with cloth😂

Is it possible to clean a tamron 17-70mm f2.8 like that? I didnt do it before but it got much dust inside. Or maybe you did it already and have some bid of that?:D

I am also having an issue with a fungus growing any suggestions on how to deal with. Oh yeah the fungus he’s 16

Where is the link????

Nice

Is there an o ring or seal that needs to be replaced?

My nikon d7000 got fungus on the viewfinder and the nikon center can't get it removed... 😂

what did you used in taking out the lens from its frame?

What about coating of the lense??? Is it gone???

How long in the bath? What ratio for the solution? I has this really fast full frame 50mm,.... Edit,... Dammit YT, play the whole video, not a center crop,...

can't see list of equipment used here

Can i ask how did the fungus get there?

dang.. how long did it take the fungus to get that big?? o.o

Soak in what solvent?

Poor fungus

What is the song playing called? Shazam doesn’t return the right song

I cant find the link for the tools....

Where can i buy all those cool tools

What if lens is not removable like sony zv1

Is the chemical reusable or need to throw away after lens is taken from it?

when you use a suction cup to remove the lens, wasn't that lens glued and don't you need to reglue that on reassembly?

poor fungus 😞

Bro those are chemicals! Wouldn't it mess up the "thounsand dollar coating"? Lol

Too bad this was necessary. I have a little crud in one of my Canon lenses and they told me I am better off living with it, because once you take them apart they are never the same, as regarding weatherproofing etc.

I still wouldn't eat that