Winsor Crosby wrote:
> The single coated lenses were labeled with a letter denoting the
> number of elements.
Except for fisheye, shift, zoom and macro lenses, which never carried
the preceding characters.
> When multicoating was introduced the letter denoting the number of lens
> elements was dropped and MC was added to the front of the lens. When all the
> lenses were multicoated for a while the MC logo was dropped.
Yup.
> The 50/3.5 was not superseded by the F2. They were manufactured side by side
> and the 3.5 got upgraded just like the others.
>
Except it never had a preceding letter, so it went from "ZUIKO" to
"ZUIKO MC".
On Nov 9, 2006, at 3:07 PM, Jeff Keller wrote:
Jeff, as above, you are correct that the fisheye, shift, zoom and macro
lenses never carried the preceding letter designations. My assumption is
that they are SC unless designated "ZUIKO MC" and that the "MC"
designation was never dropped for them.
> I believe all of the 50/3.5 lenses just say ZUIKO even if silver
> nosed. I don't think mine is labeled MC. I believe I sold one of these
> and not being sure it was MC asked the list. The consensus was that it
> was more or less SC.
>
I'm not sure that's right. The multicoating survey shows pretty clearly
that the "MC" disappears near the end of the serial #s, with nine
entries starting over #200,000 that don't have the "MC" marking. At the
low end, there seems to be one lens without the "MC" at the lowest
number, but with the color reflections characteristic of MC and one at
104,4xx with incomplete front ring info, but colors characteristic of
SC. I suspect this last one is a reporting error, but who knows. My two
are both marked "MC", with one a new data point as a black nose MC at
131,8xx.. I believe the lack of such a marking means MC for this lens
unless maybe if it has a very low serial #. (Note to newbies, serial #s
generally started at 100,001, so 101,100 would be the 1,100th lens made.)
> The earliest 20/3.5 & 38/3.5 were likely SC but in general it appears
> that the bellows lenses are MC even if labeled simply ZUIKO.
>
> The earliest 16mm were thought to be SC but I believe always
> labeled just Zuiko
>
As covered above.
> so ... most lenses labeled just ZUIKO are MC but probably not all.
>
More precisely, all lenses simply labeled 'ZUIKO" and that are not
fisheye, shift, zoom or macro, are MC.
Moose
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