If you are saying a change in coating does not appear to be related to the
change in wording (MC or no MC) on the bezel I agree.....also, because the
rings are probably manufactured and stored separately from the elements
there probably is no specific serial number for the change.
Bruce Kolber
St. Petersburg, FL 33715
USA
----- Original Message -----
From: "Chip Stratton" <cstrat@xxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Tuesday, May 15, 2001 2:10 PM
Subject: RE: [OM] 50f/1.4 breakpoint
> More of my 2 cents:
>
> 1. I don't think you can say it is generally agreed that something
happened
> between s/n 1,000,000 and 1,100,000. That is Gary Reese's opinion, and
it
> may be correct, but I haven't seen or don't remember seeing the body of
> evidence that makes this convincing, just suggestive. I don't remember
even
> Gary saying that this is the case with certainty.
>
> 2. I rather doubt that dropping 'MC' from the front ring corresponds
exactly
> with a multi-coating formulation change in the 50/1.4 - if indeed there
was
> one after s/n 1,000,000. Since subtle changes in multi-coating weren't
> 'advertised' or even made known in any fashion, it seems unlikely they
would
> dump a stock of numbered rings and make new ones without 'MC' just to
match
> a multi-coating change.
>
> I don't doubt the possibility, or even the probability of a coating change
> after s/n 1,000,000 - just want to point out that good evidence of it may
> not have been presented yet.
>
> At one time I had two 28/2.0 Zuikos in my hand at the same time. They were
> both labeled the same on the filter ring (MC), and both had multi-coating.
> What was really interesting was that the only green reflection on the
> slightly earlier one came from an element near the rear of the lens, and
on
> the other the only green came from an element near the front of the lens.
> They were unmistakeably different in terms of their coating sequence,
though
> I could never see a difference in their image quality.
>
> Chip Stratton
> cstrat@xxxxxxxxx
>
>
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