Chuck,
Thanks for the very helpful reply. Unfortunately, it isn't on the
outside. Good news is, I got the name ring off without incident or slip.
Also, the second ring. I'm still digging. The third ring seems
different, if there is one. I don't see any slots to take a spanner.
Looks like I'm getting close to the fungus, but don't know how to remove
the third element. Any ideas?
Thanks again,
Gary
Chuck Norcutt wrote:
> Depends on what you consider "salvaged". If the fungus hasn't been
> there very long and is not widespread you may be able to clean it off
> without any apparent ill effect. But fungi exude acids that will etch
> whatever they're living on. Fortunately, life as a fungus doesn't
> proceed at anything like a torrid pace. I have cleaned fungus spots off
> a couple of lenses where I can't tell there was ever anything there...
> meaning I can't locate exactly where the fungus was.
>
> If it's on the outside you are lucky and can easily clean it. If it's
> on the inside you may not be able to do anything. According to
> discussions that were going on here recently the 300/4.5 has a tendency
> for the name ring to be assembled with glue and too much of it at that.
> It may be next to impossible to unscrew the name ring to get the lens
> open for cleaning.
>
> When cleaning fungus I have used John Hermanson's suggested method which
> is to use a dab of women's cold cream. I think he specified "Pond's"
> brand but I used whatever my wife had in her cosmetics drawer and it
> worked fine. The other cleaner (taught by the Olympus factory "sensei")
> was "nose oil". That's exactly what it sounds like. Skin oil picked up
> by rubbing your finger on the tip of your nose and then rubbing your
> finger tip on the fungus spot. Skin oil (fortunately for us) has
> anti-fungal properties and the tip of the nose is liberally supplied
> with oil glands.
>
> Chuck Norcutt
>
>
> Gary W. Marklund wrote:
>
>> I have an Olympus Zuiko 300mm f/4.5 that has a couple of fungus "stars".
>> Does anyone know if this is salvageable? I only discovered them when I
>> went to list the lens for sale.
>>
>> Thanks,
>> Gary
>>
>>
--
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