The SC lenses are 6/4 (cemented 2&3 and 5&6. The MC lenses are 5/4, cemented
5&6. The MC lenses are also longer and heavier.
Julian
----- Original Message -----
From: "Roger D. Key" <rdk@xxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Sunday, September 08, 2002 5:03 PM
Subject: Re: [OM] 85/2: 5/4 or 6/5
>
> The original formulation was 6 elements/5 groups. The later version
> replaced elements 2 and 3 (a cemented group) with a single element, giving
> 5elements/4 groups. The shape of the single element appears to be
identical
> with the double element of the original version.
>
> As a matter of interest, the early lens group manual that I checked the
> original lens design in also gives full details and pictures of such
> mythical lenses as the 300mm/f6.3 and the 400mm/f4.5, as well as outline
> pictures, and filter and lens cap sizes for the 500m/f5.6, the 800mm/f9,
> and the 1200mm/f14.
>
> Roger Key, Denmark
>
>
>
>
> On Paul Farrar's excellent webpage concerning lenses at
> http://www.ametro.net/~farrar/zuiko.html, a note is made
> regarding the 85/2 of two variations: 5 elements & 4
> groups, and 6 elements & 5 groups. Did anyone here buy
> their 85/2 new and so have the technical sheet that lists
> whether their lens is 5/4 or 6/5? I want to know which
> is more recent, 5/4 or 6/5, so if you'll list the serial
> number like 123XXX, maybe I get figure this out.
>
>
> Pete
>
>
>
>
>
>
>
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