On 21 Feb 98 at 18:25, Gary Schloss wrote:
> Here is an excerpt from something I wrote offline on the subject:
>
> # Since the early to mid-50's, all lenses were coated but technically
> # -- not multi-coated. The early models had the so-called "amber
> # coating" which was single color and worked well with B&W film.
> #
> # Later, two different color coats were used: the yellow-amber and
> # the blue-purple-pink -- exact hues differ from make to make. This
> # combo supposedly worked to better correct color dispersions.
>
> I believe that all non-MC Zuikos fall in this 2nd category.
>
I think you're right here, Gary, at least in my case. Both my 35/2.8
and 135/3.5 are early non-MC, but they definitely have more than one
coating hue, a distinct yellow, and a not-so-distinct blue/purple.
And speaking of early Zuikos, I came across the following while
searching for the bill for my 4-T:
OM-2 Manual - dated 09/77
OM Manual for FlashPhoto group - 04/78
OM Manual for Zuiko Lenses - 10/76
I don't know how common these are, but if anyone needs a copy, let me
know.
Shawn Wright, I.T. Manager
Shawnigan Lake School
swright@xxxxxxxxx
http://Zuiko.sls.bc.ca/swright
http://www.sls.bc.ca
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