http://www.nikonchat.com/live-view-nikon-d90/

how to change the Nikon D90 on tripod mode hand held in the live view mode?
I do not know exactly what you're talking on the tripod mode. Live view on the screen back and shows what the sensor is seeing. Pressing LV LV press Live View begins again live longer view, and then use the viewfinder to look through the lens. Live view is for video recording, and thus opens the sensor for continuous data in it and in doing so, the display is locked. You can use LV for taking snapshots. Jim, comment wrong .. For this reason, technology advances and to advance and people to accept that benefits everyone by their purpose. This is because it is part of the evolution of the product. If, as you say "any photographer who cares about using your team never occurs to you to see live as an option, "then what is a photographer? If only photographers using film based cameras? I and many others find the LiveView be great for macro photography.
Nikon D90 Live View 臉部對焦及高清短片攝錄示範高清短片