Since the 50D got a CF Interface, it is a interesting partner for upcoming raw video 
www.smeangol.com/autoexec.bin - NOW new with RAW Video!
To enable you need to copy [Modules]
http://www.smeangol.com/MODULES.zip
to your ML directory on your CF card -
Then go to the ML menu .. at the Top are the different categories .. like movie , debug, etc .. on the right side there will be a "M" .. go there and activate the "modules" -
Then go to the movie menu ..you will have to scroll down until you see new entries. Have fun!
www.smeangol.com/autoexec.bin - NOW new with RAW Video!
To enable you need to copy [Modules]
http://www.smeangol.com/MODULES.zip
to your ML directory on your CF card -
Then go to the ML menu .. at the Top are the different categories .. like movie , debug, etc .. on the right side there will be a "M" .. go there and activate the "modules" -
Then go to the movie menu ..you will have to scroll down until you see new entries. Have fun!