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DPChallenge Forums >> Hardware and Software >> Lens fungus
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07/12/2006 11:50:22 AM · #1
does anyone know how much it costs to have fungus cleaned in a lens? i have a 70-200mm f/2.8l with a foggy haze in the lens.
07/12/2006 11:54:04 AM · #2
Never heard of fungus getting inside the lens. Did the lens get wet or stay in a very humid place? How did it get this way?

PS You could just send that puppy to me and I'll take care of it ;)
07/12/2006 11:54:32 AM · #3
Originally posted by AdrlnJunkie11:

does anyone know how much it costs to have fungus cleaned in a lens? i have a 70-200mm f/2.8l with a foggy haze in the lens.


I found 3 of my old MF lenes for my really old Minolta camera in my basement. I had a humidity problem and it appears there is some kind of mold inside in the lenses. I am assuming they are ruined.

If it's not too bad in, if they are repairable, then I would do that. I don't have any lenes for that camera and I would like at least one.
07/12/2006 12:00:01 PM · #4
i have no idea how it got there. guess what...i bought it on ebay. my fault.
07/12/2006 12:17:37 PM · #5
If the fungus is between the elements, then you're stuck. It is almost impossible to get the fungus out.

I've seen many lenses that were stored for long periods of time in humid conditions (like Houston) get fungus in them. Those lenses make fine paperweights.

If this is a Conon L series lens, you might try contacting Canon. They have a lot of pride in that high-end glass.

Good luck!
07/12/2006 12:31:35 PM · #6
I would think the repair cost of opening the lens and either cleaning or replacing the damaged element would be less than the $1600 price tag of the lens. I'd take it to Canon for an estimate. What do you have to lose?
07/12/2006 12:46:28 PM · #7
Originally posted by DrAchoo:

I would think the repair cost of opening the lens and either cleaning or replacing the damaged element would be less than the $1600 price tag of the lens. I'd take it to Canon for an estimate. What do you have to lose?


$1600 if it is an IS lens, OP doesn't say.

I've seen lenses that were taken apart, cleaned, glass replaced, and still the fungus came back.

Did the Ebay seller mention the fungus or the fog in the lens? If not, I would try to return it to the seller and report to Ebay/Paypal if they give you any flack about it. You really don't want a lens with fungus in it.
07/12/2006 12:51:27 PM · #8
First and best option is return to seller if they did not disclose this prior to the sale.
Second option is to determine *if* it is fungus, and if it is, then be very careful! Once you have a lens with fungus, the spores will easily migrate to toher lenses stored with that lens, and if conditions are right, it will grow. If you live in a very humid environment, make sure yoiu keep your lenses in a dry box (can be as easy as a cabinet warmed by a light bulb). ]
Fungus cn be cleaned, and the expense of course depends on where it is located. I'd rely on Canon to do this. There is always the possibility that it is not fungus, but if not, then that begs the question as to what it is.
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