IMovie 08 imports AVCHD 60i = lower image quality!

The Sony SR11 AVCHD 60i videos play great with Sony player under BootCamp/XP, but iMovie 08 noticeably lowered the image quality after importing.
You can clearly see the difference: http://www.alyudesign.com/images/photo/sr11-sonyvsimovie.jpg
Is there a setting to improve the import quality?

It is of course difficult to tell but I see no difference in quality. What I do see is that one has been either de-interlaced (or displays only one field) whereas the other is in its original interlaced format.

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