lens fungus dilemma

[lowep]

I have a question concerning viability of repairing this Century Optics 1.6x tele-converter lens and hope somebody can offer some advice.

As you can see from the attached photos this one has some fungus!

My question is does this or other similar tele-converter lens have a special coating that would most likely be damaged to the point that it severely effects image quality in the process of removing the fungus?

I can probably find a technician ready to take my money but before doing so would like to hear from any body who has had a similar problem with lens fungus.

Of course I am not hoping for a miracle but would be happy if I could bring this old dog back to life

[phila]

The fungus itself can be cleaned off but it will most likely leave behind its "shadow" on any coating. As long as no direct sunlight etc falls onto those elements it will probably be usable.

[lowep]

Thanks, this is very helpful.

Do I understand right that the effect of the cleaning could be the lens is more prone to flare that would normally be mitigated by the coating.

But if I avoided filming directly into the sun or close to that axis and/or used a lens hood the risk of flare could be minimized?

If so this is good news as I almost always try to film outdoors with the sun behind my shoulder anyway.