Rob Roy wrote:
>
> Last week a friend showed me his newly acquired 180mm/f2.8 Zuiko
> which he had purchased...
>
> Last night he showed me some astrophotos he had taken before he
> took the lens back to the store. I have never seen anything
> like them. The stars were football-shaped (astigmatism) and the
> brighter ones had blue halos around them (chromatic aberration).
> Any ideas as to what is going on? I have never even heard of
> such a bad lens!?
Is it the 180 f/2 or the 180 f/2.8 that is well known for chromatic
aberrations -- and therefore not a sweet deal for astrophotography?
Larry
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An example of too much time, and too much technology...
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