Fungus on lens

Attila · Expire: 2025-11-18

Seems cleanable J-9 is not a difficult lens. If you keep in right way this lens , don't need to clean it will not growing.

Orio · Expire: 2012-12-04

Nelson · Posted: Mon Feb 25, 2008 11:24 pm Post subject:

Orio · Expire: 2012-12-04

Attila · Expire: 2025-11-18

I use 50% ammonia and 50% hidrogen-peroxid this liquid remove all protein successfully. It smelly as well Smile

F16SUNSHINE · Expire: 2011-11-18

Hello
I have been soooo busy not much time to look at forum or respond to posts. I did just see this post and want to add two things to stop fungus growing. This will kill it but not remove it. Ok, so put the lens in a zip bag (airtight) and into the freezer. Some types of exotic fungus will survive short freezing. None of the lens destroying fungus will survive a week in the freezer. Also UV is your friend to kill fungus. Freezer and Sunlight. Now some will say oh the freezer will ruin the grease in the helli. Well if in fact that happens it is very repairable. I have never had a problem and have frozen half a dozen lenses over the years. Remember this is a stop growth solution not a remove one.

Idea

fotomachi · Posted: Tue Feb 26, 2008 7:27 am Post subject:

I'm not a specialist in lens fungus, but if I try hard to bring back my traumatic recollections from high school, I'd say that UV should be a better option than freezing. By freezing, you can kill micro-organisms but not necessarily their germs, while UV kills both.

LucisPictor · Expire: 2013-12-03

UV kills fungus that's right. The problem is that you need quite a considerable dosis and the lens elements often prevent UV light from getting into the lens.
To be really on the safe side, you need to disassemble the lens and clean the elements - that is the bad news.

Because sometimes you cannot put two elements apart. Have you ever tried to get in between the two front elements of the Kaleinar 2.8/100? I did and it seems to be impossible without breaking the lens, since these elements seem to be glued together inside a tube. I was able to remove the fungus from this lens (it is not difficult to disassemble and re-assemle it correctly which is an even more important aspect!) apart from the filaments that are visible the internal edge of front element. So I store the lens in a plastic box with dehumidifiying packets and only take it out if I want to use it. And even then I do not carry the lens around in the same bag as my other lenses...
That's OK, it does work, it is just some more hassle than with a clean lens, so I do not use the Kaleinar as often as I would like to, which is a pity for this is such a great piece of glass.

fotomachi · Posted: Tue Feb 26, 2008 3:12 pm Post subject:

Perhaps sterilization of the lens is an option... Smile

If you want to grow mushrooms, you first have to sterilize all your equipment in a pressure cooker. What would it to do your lens?

Attila · Expire: 2025-11-18

I found fungus close to nuclear reactor so to kill with UV kind of fun. If keep your collection in dry 35-50% humidity environment without caps you will never get fungus. If you have already in this environment it will stop growing.
Fungus can be survive almost everything except mechanical removal.Mechanical removal can be done with any material what is attack perfectly live protein and you remove dead fungus with soft clothes.

Attila · Expire: 2025-11-18

Described as "dust inside" sold as is for repair

zewrak · Joined: 12 Apr 2008 Posts: 1212

zewrak · Joined: 12 Apr 2008 Posts: 1212

pentaxman · Joined: 11 Oct 2008 Posts: 1

mattan · Joined: 26 Nov 2008 Posts: 5

This is my Helios auto tele converter 2x that I just got on ebay for 10€.

It seems to have a bad case of fungus Shocked

, what do you think? Doesn't seem to had to pic it apart and clean it. I think I'll do the freezer thing first, then pick it apart and clean the lens, sould I think of something special? I want to use this with most of my manual lenses but don`t want to risk geting fungus on the rest.

Attila · Expire: 2025-11-18

Fungus is not spread if you store your lenses right.
You can clean it easily I guess.

Sevo · Expire: 2012-12-03

That is condensation stippling - at some time, damp air condensated on the cold lens surface, and redistributed the existing dirt layer into that driplet pattern. The dirt may of course contain fungus, but more often it does not, so it is certainly worth while to make a cleaning attempt.

Sevo

mattan · Joined: 26 Nov 2008 Posts: 5

Cleaned it without any problem, came right off. Put it in the freezer just in case...
Thanks for the help

indianadinos · Expire: 2011-12-05

Hello,

Attila · Expire: 2025-11-18

I think fungus a very strong organism hard to kill successfully even if seems not there anymore. Strong chemical made it's body to liquid shape and no chance to survive. I saw fungus in very high radioactivity at Nuclear Power Plant where I did work before.

indianadinos · Expire: 2011-12-05

Hello,

Attila · Expire: 2025-11-18

I think enough to store right in my experience if store right even if it has fungus fungus not growing anymore. Fungus one of people mistake their avoid from fungus like pest , but this is false thinking same like scratches on lenses. In most of cases not impact anything else than silly user brain. At the beginning if I get a fungused lens I did try to remove immediately. Now I have lot more lenses and lot less time , so I put them together a separate dry box where humidity is low around 30% two years left none of them did grow up.

indianadinos · Expire: 2011-12-05

Attila · Expire: 2025-11-18

Yes!

estudleon · Joined: 15 May 2008 Posts: 3754 Location: Argentina

I can buy a zebra CZJ sonnar 180/2,8 that has fungus, but it is filled with fungus. My question is until what amount of fungus can be tolerated so that it is good the lens? How much money would have to offer?

An old seller told me that I must take a lupe and see one thing (eg a pretty woman) thru the lens with fungus. Image that I can see=image in the film (or sensor). Did he try to sell to me a fungus lens? May be.

He said to me that one of the best fungus killer : the present gastric juice in the saliva.

Thanks Rino