Graywolf <[EMAIL PROTECTED]> wrote:

>Ummmm..?
>
>Surely the moon is at infinity. I can not even begin to see how you could have a 
>focus problem. Autofocus problem yes, focus no.

Nope. With big glass there's always some range beyond infinity to
accommodate thermal expansion.

-- 
Mark Roberts
Photography and writing
www.robertstech.com

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