Let's untangle this.
The UV source in question is a short-wave mercury-vapor lamp. It
produces
wavelengths that DO NOT generally reach the surface of the Earth.
Without going into quantum mechanics, you don't need a "resonant"
frequency -- simply a photon with at least enough energy to break the
bond.
So short-wave UV should be at least as effective as the longer-wave UV
in
sunlight that actually reaches us.
Not necessarily true.
Which leaves two questions. Is the coloration caused by a compound
that can
be broken down into colorless substances by the application of UV?
Exactly, my pivotal question. Answer this question and all else is
moot.
And if
so, will the UV actually get through the glass to work its magic?
A relative but obvious question.
Either
way, I'm not about to dismantle the lens to find out.
There's no need to test the lens by taking photos, as the coloration is
plainly visible by holding the 55/1.2 and any other Zuiko above a
sheet of
white paper in sunlight.
Then you are left with "maybe" after a week of treatment.
The coloration is also visible through the finder.
Bill Hunter
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