Firewire [output only] as standard, SDI as an option. DSR-400 available in the UK in April 2005. DSR-450 available in May 2005.
As both of these cameras are intended for ENG and high-end corporate, the studio-based features have been dropped. The DSR-400 gains 2/3″ CCDs over the outgoing DSR-390’s 1/2″. As a result of the 2/3″ CCDs the DSR-400 costs more than its predecessor as the lens has to move to a 2/3″ mount.