In general, lenses that were originally single coated have an X.Zuiko
marking on the ring, where the "X" is a letter designating the number of
elements (E=5, F=6, G=7, etc.). Multi-coated lenses of that era that were
multi-coated have an "Zuiko MC" marking. At some point when Olympus
started multi-coating all its lenses, the "MC" was dropped leaving just the
"Zuiko."
The 35/2.8 was originally single coated and had a "G.Zuiko" marking. It
went multi-coated some time around 1981. According to the lens survey here:
http://brashear.phys.appstate.edu/lhawkins/photo/mc-sc.survey
your serial number falls in the middle of the single-coated 35/2.8 lenses,
and ought to be marked "G.Zuiko" on the lens ring. There are two suspect
data points in the survey for this lens:
(1) S/N 246000, is listed as an "MC" and having a "G.Zuiko" marking.
I suspect it is single-coated.
(2) S/N 277800 which claims to be marked "Zuiko" with no "MC"
I suspect is an MC lens after the "MC" was dropped.
Thanks to Lee Hawkins and the area of his site devoted to the OM:
http://brashear.phys.appstate.edu/lhawkins/photo/photo.shtml
-- John
At 12:57 10/7/00 , you wrote:
>I don't know whether my 35mm f2.8 is single or multi-coated. It is not marked
>MC. Its serial number is 216689. Perhaps someone can help out. As I learned
>from Tom, early multi-coated lenses bore the designation MC, but after all
>lenses became multi-coated, they dropped the designation. So everybody break
>out their 35mm f2.8 and let's see if we can find the version marked MC
with the
>lowest serial number.
>
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