Loosing quality after sporting

I have final cut pro 7 and im trying to export a video i recorded the video in 1080p on my dslr (canon rebel t1i) but when i export it, it looses quality could someone please tell me the best export settings to use to get my videos to export with the same quality as they came from the camera

This is the settings i was using

i always use quicktime conversion

video settings are

compression H.264

frame rate set to current

key frames every

frame recording checked

compressor quality best

encoding best

data rate automatic

size set to 1920x1080 HD

format set to quicktime movie

Hopefully someone can help thanks

Original quality from the camera (the bike was moving so its going to be blurred but just look at like the walls)

[IMG]http://i1188.photobucket.com/albums/z403/zac122/ScreenShot2012-11-28at101959PM.p ng[/IMG]

After exporting

[IMG]http://i1188.photobucket.com/albums/z403/zac122/ScreenShot2012-11-28at101546PM.p ng[/IMG]