I am having the same issue with my sony fx1’s being 720 x480.I have tried different combinations with the menu settings.I tried on both my cameras.I even tried throwing in a new tape ( just incase the recorded tape is not allowing the camera to change because it might detect the tape was recorded at 720 ). I have noticed the menu saying to unplug i-link cable.Changes not allowed. I tried this while i had firewire in and when it wasn’t. I find it odd to be a bad camera because i have 2 of the same (HDRFX1). Im trying these menu settings while unit is in vtr mode. I even took a look at the menu that had to do with recording settings to see if anything there made any sense. Any help would be appreciated.