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Archive 2013 · How bad is it? Fungus in Nikon 300 2.8 AF-S
  
 
psbowen
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p.1 #1 · p.1 #1 · How bad is it? Fungus in Nikon 300 2.8 AF-S


I was just about to offer a Nikon 300mm 2.8 AF-s MK1 lens for sale when I found fungus on the edge of an element in the middle of the lens. I can't see it from the rear element so I'm guessing that it won't cause any imaging problems.

Other than the fungus, this lens near mint, so does anyone have a suggestion of how I should price this now?

Thanks.


btw...hard to get a clean shot in there...lots of reflections.






Feb 08, 2013 at 04:50 AM
runamuck
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p.1 #2 · p.1 #2 · How bad is it? Fungus in Nikon 300 2.8 AF-S


JUst give it to me. That way there are no pricing decisions!


Feb 08, 2013 at 05:16 AM
dgsphoto
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p.1 #3 · p.1 #3 · How bad is it? Fungus in Nikon 300 2.8 AF-S


Seriously, send it in to be cleaned! It's too good a lens...


Feb 08, 2013 at 06:27 AM
psbowen
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p.1 #4 · p.1 #4 · How bad is it? Fungus in Nikon 300 2.8 AF-S


I would have it cleaned, if I was going to keep it. Instead I'll just knock close to 1k off of the price and see what happens.


Feb 08, 2013 at 03:36 PM
Dustin Gent
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p.1 #5 · p.1 #5 · How bad is it? Fungus in Nikon 300 2.8 AF-S


Will it cost $1K to fix?


Feb 08, 2013 at 04:19 PM
psbowen
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p.1 #6 · p.1 #6 · How bad is it? Fungus in Nikon 300 2.8 AF-S


Dustin Gent wrote:
Will it cost $1K to fix?


From what I've read, maybe $200. But a lens that's had fungus is like leprosy for many.



Feb 08, 2013 at 04:42 PM
Dustin Gent
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p.1 #7 · p.1 #7 · How bad is it? Fungus in Nikon 300 2.8 AF-S


From what I have been told (and read) fungus can "burn" into the lens elements (or coating if you will) - so the sooner the better if you get it fixed..

I would for sure isolate that lens from your other lenses.. That sucks though..



Feb 08, 2013 at 04:46 PM
runamuck
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p.1 #8 · p.1 #8 · How bad is it? Fungus in Nikon 300 2.8 AF-S


Fungi don't like light. On a sunny day, point it at the sun and leave it for a couple hours. DDon't put a camera on it. Just let the sunlight stream through. The sunlight kills the spores and fungus and keeps it from spreading. Of course, it must still be cleaned.


Feb 08, 2013 at 05:15 PM
Javier Munoz
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p.1 #9 · p.1 #9 · How bad is it? Fungus in Nikon 300 2.8 AF-S


A UV lamp and sending in to repair would be my choice


Feb 08, 2013 at 05:52 PM
 

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Keith B.
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p.1 #10 · p.1 #10 · How bad is it? Fungus in Nikon 300 2.8 AF-S


If it really only costs $200 to have it cleaned, then it's worth it...'cause no one's going to pay a good price for a contaminated lens. The fungus eats beyond the coating and into the actual glass.


Feb 08, 2013 at 08:03 PM
popinvasion
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p.1 #11 · p.1 #11 · How bad is it? Fungus in Nikon 300 2.8 AF-S


how does one get the fungus in the lens?


Feb 08, 2013 at 08:14 PM
runamuck
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p.1 #12 · p.1 #12 · How bad is it? Fungus in Nikon 300 2.8 AF-S


Fungi are spread by spores floating in the air. All lenses "breathe" as elements move around during focusing and zooming. This draws in air and forces air out.


Feb 08, 2013 at 08:21 PM
mike-in-ak
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p.1 #13 · p.1 #13 · How bad is it? Fungus in Nikon 300 2.8 AF-S


While I shy away from a lens in this condition, I am curious if there is a tendency for the fungus to return once cleaned?


Feb 08, 2013 at 08:33 PM
dgsphoto
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p.1 #14 · p.1 #14 · How bad is it? Fungus in Nikon 300 2.8 AF-S


Dis-assembly and Cleaning is the best option which will affirm if there is etching into the glass.

Etched glass is not necessarily bad depending on what element it is. I think Macros would make the presence of fungi/etching more obvious than others, but I could be wrong.

Cleaning should involve not just the affected glass but the entire lens (all optics and the barrel) to get rid of any spores so that there is no recurrence.

Fungal spores can be viable for a very long period even under unfavorable conditions. If there are still any spores lying around after cleaning there could be a recurrence. So mere cleaning may not enough (unless it was a very thorough job). It's best to watch for any recurrence. Recurrence may not necessarily be bad as long as it is dealt with in a timely manner as fungi are most susceptible in their hyphal stage. So if measures are taken (light and humidity control) immediately after a recurrence, then the chances of preventing further outbreaks are much better and the lens could be saved.





Feb 08, 2013 at 09:29 PM
psbowen
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p.1 #15 · p.1 #15 · How bad is it? Fungus in Nikon 300 2.8 AF-S


Thanks for the suggestions...
I let it lens sit overnight under a UV source.

I've got quite a lineup of people wanting this lens as-is, it will have a new home soon.



Feb 09, 2013 at 04:29 PM
Dustin Gent
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p.1 #16 · p.1 #16 · How bad is it? Fungus in Nikon 300 2.8 AF-S


That is great and GLWS.. I see you are local


Feb 09, 2013 at 06:15 PM
runamuck
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p.1 #17 · p.1 #17 · How bad is it? Fungus in Nikon 300 2.8 AF-S


UV lamp will work, but the sun is free. The UV requires a trip to the home emporium and finding someone who actually knows what a UV lamp is.

I guess I will just have to get along with my 300 f4,



Feb 10, 2013 at 12:24 AM





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