One of the problems with that Tom is that here in Taiwan, I have
seen quite a few lenses that don't have "fungus among us" as far as
the front element is concerned due to a filter in the front.. So
in this type of hostile environment, a front element filter is a
must. I'm less worried about the damage, more worried about the
moisture..
Albert
I really doubt the validity of this observation. I don't think that
fungus migrates through the glass of the front element. It is sucked
in with each close focus or zoom. (Internal focus lenses may be
better in this regard.) If anything, the usual UV filter "lens
protector" actually would make a better home for fungus. Fungus does
not usually like UV. I suspect that what you are seeing is more of
your acquaintances who are preserving their expensive lenses with
filters are also the ones who do not use their equipment much and
that it sits in their nice dry air conditioned environment.
Walt Wayman wrote:
... Any lens whose performance isn't
degraded by having even the best filter on it isn't worth
protecting.
A masterful summary of my feeling.
--
Winsor Crosby
Long Beach, California
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