> And the 400mm/F4.5. The 300mm/F6.3 and 400mm/F4.5 prototypes appeared in the
> Manual For Zuiko Interchangeable Lenses Group dated January 1973 (coded 0173
> on
> the back cover) complete with pictures, techspecs and lens cross-section
> diagrams. I wonder what happened with the prototypes.
>
> http://members.nbci.com/_XMCM/veluwen/om-sif/lensgroup/zuiko_prototypes.htm
>
>
> hnz
The early system brochure that someone had on their Web site (I lost the URL)
appears to have a 400/4.5 in the array of lenses in the photo.
Paul
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