John,
Thanks for the response, but it didn’t really have any effect on the QT changing the aperture. It seems when I use FCP to export, and use their settings (say the 720×486 default) the footage comes out pefect in QT, but reads as having a frame size of 640 x 480 – which is neither what I exported as, nor the actual size as recognized by FCP (it imports as a 720×486).
It has to be an animorphic issue. I’m surprised this hasn’t come to light to Final Cut yet. Having a disparity between what quicktime recognizes outside of final cut, and what final cut recognizes itself is an annoying and nerve-racking issue.