Hi, Donald et al,
>I just acquired a Zuiko 55mm f1.2 silver nose.
[snip]
>Since I intend to use this for astro photography, sharp
>infinity focus at wide open aperture is important.
I'm afraid the Zuiko 55/1.2 renders rather soft pictures wide-open. It has
"tons" of coma aberration -- stars will show as triangles. However, it
improves a lot when stopped down to f/2, even more to f/2.8.
Hope this helps,
...
Carlos J. Santisteban
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