I think I got it the wrong way round; the early version had 6 elements in
four groups, and the later model 5elements also in four groups. See
http://www.mir.com.my/rb/photography/hardwares/classics/olympusom1n2/shared/zuiko/htmls/85mm.htm
Roger Key
>From: "Roger Key" <rogerdkey@xxxxxxxxxxx>
>Reply-To: olympus@xxxxxxxxxx
>To: olympus@xxxxxxxxxx
>Subject: [OM] Re: Attention 85 mm owners AGAIN (!)
>Date: Thu, 25 Jan 2007 14:16:03 +0100
>
>
>As far as I recall, the early 85's (perhaps all the silver-nosed) had a
>different formulation to the later 85's, which had one more element. In
>fact
>i believe that the early 85 had one thick element which was replaced by two
>thinner elements in the later formulation. Can anyone confirm this? I do
>not
>have any documentation at work....
>
>Roger Key
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