Generally, I'd be more interested in the optical performance of coatings
than their resistance to improper handling. I mean, it's not like they
just evaporate from the surfaces of one brand and not another. One has
to actually mechanically and/or chemically attack them to remove the
coatings, so this should only be of interest to someone who is rather
rough on their lenses. "Wearing out" a coating implies poor care.
Another speculation: how much difference does it make to performance if
the coating is removed from the front surface of the front element of a
typical prime lens with 10-14 coated surfaces, or a zoom with 14-28
coated surfaces? It seems that it would at most lead to a rather small
reduction in light transmission. Unlike an interior element, where
reflections could bounce around inside and cause trouble, the
reflections from the front of the FE just bounce harmlessly out away
from the lens.
Moose
Albert wrote:
There's a guy at my local photo club; a walking encyclopedia of
knowledge when it comes to lenses; because he's owned practically
every single one before.
One of the arguements we got into is coating. He says Sigma's and
Tokina's have coatings that are prone to going bye bye within 3 years.
As I've never owned my lenses for that long (and my UV in front keeps
me from wiping my front element) I was wondering if this can be
verified by the list or not..
He said that sigma, tokina, canon, generally have coatings that are
more prone to being worn out. Said Leica coatings lasts the longest..
True, or BS? Or just how well you maintain the lens?
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|