{youtube}B80ZdcD-Y3k{/youtube}

Very very easy!

Download the Canon plugin for Final Cut here

If you don't have Text Wrangler (free), download it here

The name of the file to edit is called camera.plist . Its location is here

/Library/Application Support/ProApps/MIO/RAD/Plugins/CanonE1.RADPlug/Contents/Resources

The code you need to insert is:

    <key>600D</key>
    <array>
        <string>Canon EOS 600D</string>
    </array>

Save!