Given the slow aperture, I wouldn't be surprised if the 200/5 was very sharp.
An optical designer can make a better lens if he/she doesn't have to deal with
the aberrations inherent in a faster design.
I'm a bit surprised that it's so sharp wide open. Kudos to Olympus.
Skip
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>Subject: [OM] Bokeh
> From: "C.H.Ling" <chling@xxxxxxxxxxxxx>
> Date: Tue, 6 May 2003 23:17:58 +0800
> To: <olympus@xxxxxxxxxxxxxxx>
>
>I have re-shot the test with flash and the 75-150/F4 is added:
>
>http://www.accura.com.hk/OM/bokeh.htm
>
>During the test I found that 200/5 is darker than F5 and the darkest one
>even among the F5 zooms. On the other hand my resolution test with all long
>lenses at 200mm shown that 200/5 is the sharpest one even wide open.
>
>More to come this weekend.
>
>C.H.Ling
>
>
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