Some Zuiko telephotos purposely go beyond infinity because focus can change with
temperature shifts.
John
PCACala@xxxxxxx wrote:
> Hi Windsor:
>
> > Why would you just pass up non-telephoto lenses that do not focus at
> infinity?
>
> I thought someone might ask. Focusing past infinity is actually a feature of
> some (many?) 300 mm and longer lenses. Different ambient temperatures result
> in focus shift. Using a Varimagnifinder I've determined that even the 200 mm
> f/4.0 Zuiko can focus shift, so I don't writte off a 200 mm or above which
> won't get pinpoint infinity focus in a sales shop.
>
> Gary Reese
> Las Vegas, NV
>
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