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[OM] Re: Zuiko 35~105/3.5-4.5

Subject: [OM] Re: Zuiko 35~105/3.5-4.5
From: "Piers Hemy" <piers@xxxxxxxx>
Date: Wed, 18 Feb 2004 11:15:25 -0000
I can go halfway!

151xxx has a rear element which is as near flat as I can determine. 

Piers 


-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of Roger D. Key
Sent: 18 February 2004 10:31
To: olympus@xxxxxxxxxx
Subject: [OM] Re: Zuiko 35~105/3.5-4.5



There must have been some optical changes, as I believe that one can see a
difference in the rear element. As far as I recall, the older lens has an
externally flat  rear element, whilst the newer model has a convex element.
Can anyone confirm that?

Roger Key



Piers wrote:

Best I know is that the redesign involved a change in the mechanical aspects
of the close-focus chassis.  I am not aware of any optical changes.
Whether
improved mechanical reliability can be characterised as improved performance
is a philosophical matter!

Piers

-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of Moose
Sent: 18 February 2004 03:44
To: olympus@xxxxxxxxxx
Subject: [OM] Re: Zuiko 35~105/3.5-4.5


Yeah, I've looked around, but seen nothing about what it all means.
Gary's tests showed what could be a slight edge for the earlier version, but
really no meaningful difference within his criteria. And, of course, that's
only one sample of each.

Moose

GMcGrath@xxxxxxx wrote:

>Here's the non-HTML version:
>
>Just thought I'd remind that there was apparently a change in the lens 
>at s/n 500,000. Don't know if it makes much difference in performance,
though.
>Greg






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