just to clarify:
We can import and transcode Sony MXF files into FCP 7 with both Log&Transfer and XDCAM plug-in. But we have to connect Sony XDCAM camcorder to Mac for rendering video. And as far as I know XDCAM plug-in doesn’t support SD MXF video.
FCP 7 and X can render out to any XDCAM format using Content Browser (7 or X) or XDCAM Transfer (7 only).
Neither Log and Transfer nor the Sony plugins transcode XDCAM. They only rewrap to the native codec in a QT wrapper.
FCP X can native support MXF files without any plugin.
FCP X will not take XDCAM files without the Sony Import from Camera plugin (works within FCP, no separate UI) or Sony Content Browser (separate app that runs as a plugin)