Very likely it's just fungus, which MAY be removed with cleaning -- there's no
way to know without trying.
The "haze" on this one particular element of the 65-200mm is quite unusual in
that it is so predictably common! There's GOT to be something about it's
coating or make-up that promotes this problem. But I doubt strongly if it's
truly a "fungus" problem.
Fungus usually needs two "ingredients" -- moisture and warmth. The easiest to
deal with is moisture -- keep your lenses dry! If you live in or even visit an
area with high humidity or store your lenses in closed cases for long periods of
time, invest in some desiccant to store with your equipment. Once your lenses
develop fungus, get them cleaned right away -- it will only get worse, and will
eventually damage the elements permanently.
John Wheeler wrote:
> I have some non-Oly lenses (C*n*n) which seem to exhibit the same malady.
> They appear to have an evenly distributed mist over some of the interior
> faces. Is this stuff a form of fungus? Does it form due to humidity or
> temperature differential? I'd appreciate any comment and/or advice.
>
> John.
>
> -----Original Message-----
> From: owner-olympus@xxxxxxxxxxxxxxx
> [mailto:owner-olympus@xxxxxxxxxxxxxxx]On Behalf Of C.H.Ling
> Sent: Friday, April 25, 2003 12:30 PM
> To: olympus@xxxxxxxxxxxxxxx
> Subject: Re: [OM] Hazy 65-200
>
> I suggest to return it, I have seen three has this problem, one
> uncleanable due to long storage in that condition, another one I clean
> it and the haze came back again, the second time I even clean up the
> whole tube which holding the elements but the haze also came back two
> to three months later, after that I decided not to touch the Zuiko
> 65-200 again.
>
> C.H.Ling
>
> Tom Scales wrote:
> >
> > Well, I just got a 65-200/4 in the mail that I won on ebay. Yep, the
> > dreaded haze on the second element from the rear. Since I've never seen it
> > on one of mine, I forget completely how hard it is to clean.
> >
> > Any thoughts? I have to decide whether to return it or have it cleaned.
> >
> > Thanks,
> >
> > Tom
>
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