John, you will have seen far more of these than me. Is it possible that
Type 3 are all 3 million, Type 4, 4 million and Type 5, 5 million? I don't
think I have ever seen a 4 million serial number, but I haven't knowingly
seen a Type 4.
Chris.
On Mon, 11 Sep 2023, 17:50 John Hermanson, <jhermanson21@xxxxxxxxx> wrote:
> I have found that some "Made in Japan" samples are actually the previous
> MC version. As if the factory ran out of MC name rings and substituted the
> newer MIJ rings before switching over to the MIJ design. Comparing the
> insides and front lens assy confirms this. A REAL MIJ 50 1.8 will be over
> serial number 5 mill.
>
> On Sun, Sep 10, 2023 at 6:16 PM usher99--- via olympus <
> olympus@xxxxxxxxxxxxxxxxx> wrote:
>
> > > Reputedly Type 5 lenses are optically superior. They all seem to have
> > been
> > > made in the same factory and precision and QC may well have been
> better.
> > > You cannot, however assume a Type 5 is better than any other; My best
> and
> > > worst samples of the 50mm f1.8 are both Type 5.Thanks for the
> > comprehensive answer, Chris! All that rings true but a couple of
> > surprising observations. I was not aware of that much copy variability
> for
> > the MIJ versions and would have thought the serial numbers would be a
> good
> > indicator for the most part unless the lens had been disassembled. I have
> > not seen any mention on this list of large sample variability on the high
> > sn 50/1.4 Zuikos. Certainly the Z 21 f2's had much sample variability in
> > sharpness at wider apertures as documented by Mike Hatem. At least
> Nathan
> > obtained his from Bill Barber, IIRC, so should have a nice MIJ copy. I
> may
> > have to go look at my Z 50/1.8, Z 50/2 macro, Z 50/1.4 and Z. 50/3.5
> macro
> > just to give them some attention.
> > Nifty fifty fan, Mike
> > --
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> >
>
> --
> John Hermanson
> Camtech Photo Services, Inc.
> 21 South Lane
> Huntington, NY 11743-4714
> www.zuiko.com : | : jhermanson21@xxxxxxxxx
> --
> _________________________________________________________________
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>
>
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