Sony: OLED Viewfinder Gives Cameraman a Better View – CES 2012
Even the camera viewfinder can become a high-tech device. Think about it – if you can spot a problem as you are recording, you can fix it. That, and energy savings makes an OLED viewfinder a great addition.
Al Dean from Sony shows off the SLT A77V and A65 Cameras. Using a translucent mirror, the A65 will shoot 10 frames per second, and the A77; 12 frames per second. When shooting video, the mirror stays in it’s place.
Translucent mirror means it doesn’t lift to get out of the way for the apature, like SLR cameras do.