http://imaging.nikon.com/lineup/dslr/d4/features02.htm
D4 可以 Live view 時拍。
如果去到每秒 24 張就變成 1,920 x 1,280 pixels 的高清相
Quiet and silent modes during live view photography
When shooting in situations that are sensitive to the sounds of a camera shutter, the D4 live view feature offers two solutions. The quiet mode keeps the mirror in the up position. When using the silent mode, the mirror remains up and the shutter remains open, which can be useful during events such as concerts and conferences. Silent mode* enables high-speed continuous shooting at either 12 fps (in CL mode) or 24 fps (in CH mode) for 2.5 megapixel files.
*Maximum frame size is 1,920 x 1,280 pixels in silent mode. Image quality is fixed at JPEG fine.
