Nope. The moon is 1/2 degree angular diameter.
So, by your math, 600mm is about rught.
george
>
> Those are some powerful glasses you are wearing there partner. :-)
>
> Since the moon is about 1/9 of the diagonal and it is about 1 degree
> wide the lens would have a field of about 9 degrees. That would make it
> about 250 to 300 mm assuming no cropping involved. I saw a print at the
> gallery and it is very nice. Even though it is very graphic with the
> silhouettes there is some shadow detail to give some richness and the
> grace of the figure is more obvious.
>
> Winsor Crosby
> Long Beach, California, USA
>
>
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