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Re: [ATM] Footballs?

Jeff Baldwin wrote:
> Focusing
> in and out will yield either round images on both sides if it is a surface
> of revolution, or 'footballs' rotated 90 degree from each other in and out
> of focus if it has noticeable astigmatism.

But footballs are round! At least they are in the UK.

Then I realised that you are talking about American oval footballs:-)

We have Rugby balls that are oval.

Chris
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