Lens repair : Recipe for fungus cleaning
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- Опубликовано: 11 окт 2024
- Recipe
70% distillated water
25% isopropyl alcohol (99% concentration)
5% hydrogen peroxide (30% concentration that you find in drug stores)
Lens repair : Recipe for fungus removal
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Hello friends,
This is something I discuss in most of my videos when cleaning fungus from a lens. It is however so important that I decided to create a single video describing the recipe to clean fungus that I use. The idea is for you to have a general reference for fungus cleaning.
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
JIS screwdrivers: amzn.to/3mC06MQ
(This set has J000, J00, J0, J1)
DONATION: paypal.me/DiyE...
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
Thanks for the video 👍🏻
Removing the fungus is the easy part, getting access to the fungus is the real challenge...
You're right, but having the right mixture makes life a lot easier. Cheers.
Not any kind of fungus is easy to remove. There are alot of them.
will the cleaning fluid damage the special coating on nikon lens? can't fungus be removed by just dry wiping it?
I've never seen damage myself, so my answer is no. Dry cleaning fungus, I've never tried that, but I don't think that will work. I've tried with just isopropyl alcohol and it doesn't work 100%. Cheers.
70-200 FL left some scratch after cleaning some fungus.
You dont want to clean aspherical lens elements with 100% alcohol as it would damage the epoxy lens.
Is it same liquid in the video with zeiss optic cleaner?
I mean hama optic htmc with zeiss
@@maxumpromedia no, only isopropyl alcohol, oxygenated water, and distillated water.
I fy ou look at the edges of the 'cleaned glass' you'll see two separate spots where the fungus isn't gone. If the fungus has etched the lens glass or coating nothing will clean it and it can not be safely polished. Some fungus is killed by saliva or skin oils. Some fungus is killed by athletes foot creams. Some use cold cream with good results. The point is to be patient, try different methods and know when to give up.
Thanks for the tips !
2:50. What is this?
And. What happens if the fungus it is between this group of lenses?
What do you mean by "what is this?" at 2:50? I just see a piece of glass. If fungus is inside, you'll need to disassemble further and clean as shown on the video, if a sealed group, here is an option ruclips.net/video/XxVDBvCJOk0/видео.html
hello，bro.25% isopropyl alcohol 5% hydrogen peroxide，How much concentration do you use for these two reagents?
the isopropyl alcohol is 99%, the hydrogen peroxide is 30%?
Yes, 30% but less easy to find. You can use smaller concentration and put a bit more instead of the distillated water. Best.
@@diyextravaganza thank you
@@diyextravaganza bro，I would also like to inquire if it is possible to use only the previous reagents and not use the hama lens cleaner，Will the effect be different?
I've never got good results with the fungus removal solution for a final cleaning. I guess you cannot find the hama one easily, you can try this one amzn.to/45DHq7c
Does this method saves lens coatings???
Damaged lens coating due to fungus is kind of old wive tales, to this day, I've done a bit more that 400 lenses, and I've seen real damage on 2 lenses, and very mild damage on 5 or 6 more. I really depends on the quality of the coating. Best.
Is it ok to use 70% isopropyl alcohol?
It's a totally empirical thing, so you can try and let me know. Cheers.
Covid-19 helped me clean a 60 year old Carl Zeiss Jena 135mm f/4 Sonnar.
Cheap Antibacterial Hand Sanitiser (70% Alcohol), applied the same way in this video, removed all 'spider' fungus from the rear element.
@@Renegade1127 only use Alcohol? I wnat to try
Hi sir! By 30% concentration hydrogen peroxide did you actually mean 3%. I see 3% in all my stores.
I can obtain 30% thru special order on the drug store near my home. I've seen 12% which is more easy to get. 3% is a bit weak but it will work fine I guess, you maybe need to increase the proportion of hydrogen peroxide 3% to something like 20-25%. Best.
@@diyextravaganza for 3%, would assume you’d recommend displacing with water with it? - 50% distilled water, 25% isopropyl (99%), 25% hydrogen peroxide? And, because the ED coating is hard baked into the glass, the glass + coating should be resilient too it yes? I have a Nikon 300mm F4.5 ED IF I got for 68$ coming in, only has very slight fungus around edge of primary element. Just making sure I got my ducks in a row before I restore it. Dont want to damage it.
@@DSLRPhotoShooterspot on, that's exactly what I meant. Coatings are generally metallic deposits and really hard to damage. Nikon coatings are really good, I've never seen serious damage done by fungus on a Nikkor (I cannot say the same for other brands) . So, you have little risk for your coming lens; 68$ !!! Nice deal.
@@diyextravaganza that’s good to know!!
@@diyextravaganza because I’m hoping the fungus’s acid isn’t permanently etched in glass. For a very slight presence of fungus and otherwise good condition lens, great deal!
You don't say if this solution is safe for soft internal coatings! Is it? If not, and somebody ruins a $400 lens because they used your solution...
I've used this solution for a few years now and never had trouble with it. Morevover, coatings are metallic deposits made on the surface of the glass and very hard to damage.
is there a way to remove fungus for glued elements mine seems like fungus is in middle area where two glasses are sealed I cleaned outside lens so many times, but realized fungus are inside
the best way to proceed would be to know the optical recipe to determine whether the lenses are glued or not. If not glued, the optical assembly needs to be disassembled, the independent lenses removed and cleaned, usually you need some solvant to remove some glue, isopropyl alcohol generally does the trick on nikkors, other lenses like the tokinas require nail polish removers (or other more powerful solvant). If the lenses are glued, you need to heat at about 120-140°C (progressively to avoid cracking the lenses), separate, clean, and glue again using canada balsam. You need to pay attention to the alignment of the lenses, otherwise, you'll lose some sharpness.
got it thx! i would love to see a video that shows removing the fungus by heating the glass to separate them~
@@danielktype that's a rather uncommon repair but if it comes up, I'll do it. Last time I got this, it was on a cheap lens and not really worth the effort.
@@diyextravaganza yea~ definitely that would be awesome! i couldn't find any youtube about this repair, it would help lots of ppl who are frustrated looking for solution :)
@@danielktype Noted, :)
Does that solution has expiration date?
Hello, i don't know. Cheers.
@@diyextravaganza are you still using the same solution until now?
@@janamielkamantigue1817 Yep, been using it for some time. Cheers.
never use your finger.
thanks for the advice
and i use after UV lighting ,,,, for 24 hours ...
that does nothing except degrade paint, plastics, balsam, epoxy, etc.. uv only sterilizes the outer surfaces it shines on. it won't kill any fungus in between parts or behind glass and even if it could the air is full of fungus spores that will immediately contaminate your lens. total waste of time.
@@creepyloner1979 100% true
yeah, but how do you get rid of the residue?
@@creepyloner1979 UV-C ~ 250nm light is good for surface cleaning. Despite what the guy says about sports floating in the air, doing a thorough decontamination inside is always recommended. The difference is between some random spores in the air versus doing nothing and still having random spores from the air plus spores that you already know are left inside, that will happily regrow. By the way I think 45 minutes is what is said to be effective, according to published studies. But of course there are issues of brightness so we really don't know how long.
@@saganandroid4175 I don't think UV-C is able to penetrate into a lens.