MMirror Up Mode
Mode featuerd in select D-SLRs. Press the shutter-release button once to raise the mirror, again to take photograph (shutter will be released automatically if shutter-release button is not pressed for 30 seconds after mirror up). The mirror will be lowered after the shutter is released. Choose this mode to minimize camera shake in situations in which the least camera movement can result in blurred photographs. Note that autofocus, metering, and framing can not be confirmed in the viewfinder while the mirror is raised.