Sony SLT-A99V - MENU Button: System Information and Initialization; Camera Software and Language; Sensor Cleaning and Initialization

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The functions selected with the MENU button
Functions list
Version Displays the camera software version.
Language Selects the language.
Cleaning Mode Starts the cleaning mode to clean the image sensor.
Demo Mode Sets the demonstration playback of a movie to on or off.
(On/Off)
Initialize Restores the settings to their defaults.
(Reset Default/Rec mode reset/Custom reset)