I use mainly FCP 7 (Studio 3) and have been using a variety of cameras and various files with FCP.
My main encountered that I have attempted to overcome with the Canon XF Plugin for Final Cut Pro 1.3.1, to import MXF files from the Canon XF305 camera. So far, no change and don't believe the plugin to work.
you might want to look at third party software if the Canon plugin isn't working. Personally I have not tried this software with that camera so it might be worth asking around some more or try the demo versions.
Canon XF plugin for Final Cut Pro helps Cannon users a lot while importing Canon .MXF footage into Final Cut Pro. However, users still have problems one or another when utilizing the software on Mac OS X. Well, if you have the versatile MXF Converter, it will be possible to let Final Cut Pro (X) touch MXF material shot on a Canon XF305/XF300/XF105/XF100 and C300 camera without utilizing Canon XF plugin or even handle the broken file structure and long with smooth importing and editing work.