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Re: [OM] Lens multicoating Crossref

Subject: Re: [OM] Lens multicoating Crossref
From: Mikael von Numers <mnumers@xxxxxx>
Date: Thu, 26 Mar 1998 08:49:09 -0800
Hi,
I have some additional information on the multocoating theme.
According to the book "The world of OM-systems by Franz Pangerl
printed in 1975 all Zuikos are single coated except 18mm F3.5,
24 mm F2.0, 28 mm F2.0 and 35 mm F2.0, which are multicoated. This was
Olympus coating policy at that time: The coating treatment consists
of one layer in the case of standard lens constructions and of multi-
layer in the case of multi lens systems which require extra treatment 
in order to suppress internal flare effects. As regards questions in
coating techniques, therefore, Olympus is guided entirely by the
demands of practice. The efficience of the coating seems especially
good in the 35 mm F2. Norman Goldberg writes about this lens in PoP
Photo (April 1986): The 35-mm F2 bears the distinction of producing the
lowest flare level of any lens we have tested in recent history that
I can recall.

Mikael

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