>From the feedbacks of many enthusiasts, I've come to the conclusion that it is
advisable to buy lenses (especially second hand items) whose optical formula
follows the rule of:
No. of elements = No. of groups. Examples of Zuiko lenses in this category
would be the Zuiko 90mm f2 macro (9E/9G) and the 28mm f2.8 (6E/6G). This is to
prevent the possibility of element separation with age, especially true with old
lenses whose lens cement starts to deteriorate with age. Just my $0.02 worth.
Giap
E-mail at giaptt@xxxxxxxxxxxxxx
Winsor Crosby wrote:
> >You jest, surely?
> >
> >I doubt any examples of the 250mm f2 had 'ordinary' performance.
> >
> >I recall someone once said that the 180mm f2, 250m f2, 350mm f2.8 and
> >the 24mm shift lenses were all assembled by hand by one skilled
> >craftsman at Olympus.
> >
> >I am not able to vouch for this story personaly but it is a nice
> >story anyway.
> >
> >With these particular lenses I doubt the variance between samples
> >when shipped would be very much at all.
> >
> >Giles
> >
> >PS Part of my brain is telling the rest that wry humour may have
> >been intended, in which case forgive me for not registering it as my
> >humour detector is off-line for repairs at the moment.
>
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