David, you've tested the Sony-V1U pretty extensively. Someone has asked in another forum:

Is the HDMI output from that cam 1440x1080 or 1920x1080?

Tnx

HDMI is 1920x1080, but read this for more details : http://www.dvinfo.net/conf/showpost.php?p=752416&postcount=2.

Basically the V1U's 1920x1080 output is up-res'd 1440x1080.