How does the 45-200 compare to its competitior the 100-400L?

Hey all,

Maybe a strange question, but how do you feel the panasonic 45-200 compares up to want i believe is the most used telezoom the canon 100-400L. I know these two are not in each others price range. But how do they compete in terms op picture quality?

Thanks Jan

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'In Wildness is the Preservation of the World'