What's the half-life of the active chemical elements in the lens ? Could be
that those old 55/1.2 lenses are now radioactively "dead" by now.
...Wayne
-----Original Message-----
From: olympus
[mailto:olympus-bounces+wayne.harridge=structuregraphs.com@xxxxxxxxxxxxxxxxx
] On Behalf Of Ken Norton
Sent: Saturday, 19 November 2016 3:39 AM
To: Olympus Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>
Subject: Re: [OM] OM 55/1.2
> Those with lanthanum glass (e.g. yellowing) are probably optically
sharper/better than those without, since generally the lanthanum type glass
was used because it had better optical properties (similar to how leaded
glass is/was better, despite falling out of favor for various reasons).
Like killing its owners?
AG
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