[pure-silver] Re: (slightly OT) little black spots in Zuiko lens
- From: "Jim MacKenzie" <jim@xxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Tue, 22 Feb 2005 08:42:17 -0600
----- Original Message -----
From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Tuesday, February 22, 2005 8:39 AM
Subject: [pure-silver] Re: (slightly OT) little black spots in Zuiko lens
> Years ago, when certain kinds of optical glass was difficult to make,
> lenses were sold with a small bubble or two in one or more elements.
> I'm not talking about off brand lenses but lenses from reputable
> companies.
Not just years ago - this still happens in every lens sold today, although
the size and number of the bubbles has decreased quite markedly. The
perfect lens has not yet been made.
Jim
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