Cleaning lens fungus.

[baachitraka]

I got a suggestion to immerse the lens in Hydrogenperoxide for an hour to clean/remove the fungus. I do not know how dangerous it is to do that.

[Pumalite]

You may take a look here:
educate-yourself.org/cancer/benefitsofhydrogenperozide17jul03.shtml

[illumiquest]

Plain white vinegar works extremely well on fungus.

[Rol_Lei Nut]

I've used hydrogen peroxide, vinegar, ammonia and my old favorite - lighter fluid - to clean fungus and other things off lenses without any damage.

I've even tried putting coated lens elements through my dishwasher without any noticable damage to the coating - but that I really wouldn't generally recommend...

Not many things hurt a modern coating, if used gently.
The only time I damaged a lens while cleaning it was the internal coating of an old DDR Meyer lens, which had the consistency of gelatine...

[baachitraka]

I am really scared to remove the front element. Can I immerse the entire lens in H2O2? I know it sounds not so clever.

[donkee]

I wouldn't unless you really hate that lens.

[baachitraka]

I'm looking for an instruction manual to remove the front element of Zuiko 24mm f/2.8? Any help...

[Rol_Lei Nut]

I'm looking for an instruction manual to remove the front element of Zuiko 24mm f/2.8? Any help...

I don't know that particular lens, but the majority of front lenses are held in place by a retaining ring.
While you *can* use scissors or some other tool to get it open, I really recommend using the proper tool. The exception is if you have a big enough rubber stopper and the retaining ring isn't too tight.

Also, I wouldn't try to take the front element out the first time on a €140 lens. Get hold of some €5 junk lens and practice taking that apart first.
Even with the proper tool, it's easy to damage or deform the retaining ring or even badly scratch the lens if you slip.

Also putting the lens back takes some care, since it should be properly centered.
Using a vibrating mobile phone and tightening by small degrees can sometimes help with centering...

Good luck!

[wblynch]

Not many things hurt a modern coating, if used gently.

What defines a "modern" coating? I have 40 year old lenses, do they count as modern?

Thanks.

[baachitraka]

No I will not touch it, rather I find somebody who can clean it. I do not know how much it cost...