Every one knows viewing the lame LCD on the back of a 5DMK2 makes it almost impossible to shoot, so what do you do?
I first saw this monitor at Shooting Star Video, Jeff has great gear and it is ALWAYS meticulously maintained. This is perhaps the perfect 'viewfinder' for the 5D if indeed you can adapt the mini HDMI out of the camera to the DVI in on the TV-Logic LVM-071W. This thing has great features including a focus assist mode that highlights in red the edges that are actually in focus.
At $2500 it's pretty costy, almost the price of the camera body.