Until the mid '80s, they were silvernosed. The coatings did change
through the production run, and the final ones before black-nose had
all but the green reflection. The later, black-nosed ones are fully
multi-coated.
As with the 50mm lenses, there was some optical changes through the
years too. The earlier ones tended to be sharper in the center with a
loss of sharpness in the corners. The later ones sharpened up the
corners, but the center isn't quite as sharp. The later ones have a
near uniform sharpness across the entire image area.
As to the overall sharpness quality of the 100/2.8, my particular
sample, which is the immediate precurser to the blacknosed version, is
as sharp as the 100/2.
AG
On Thu, Sep 26, 2013 at 8:59 AM, Paul Braun <pbraun42@xxxxxxxxx> wrote:
> As an intermediate step to the yet-to-be-released Wonder Lens, I'm going to
> pick up a clean 100/2.8. I've seen a couple of listings that mention
> "early version". What's the history on this lens? Is there a more
> desirable version, and is the serial number the only way to tell?
>
> Thanks.
>
> --
>
> Paul Braun
> Music Junkie
>
> "Music washes from the soul the dust of everyday life." -- Harlan Howard
> --
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--
Ken Norton
ken@xxxxxxxxxxx
http://www.zone-10.com
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