Sony HDC-900 Operation Manual page 68

Viewfinder Screen Status Display
7 Gain value
Displays the video gain value (dB) set with the GAIN
switch.
8 Focus position
Shows the focus position of a zoom lens as a numeric
value (0 to 255 (infinity)).
9 Battery voltage
Displays the input voltage.
0 F value
Indicates the lens F (iris opening) value.
qa Shutter/EVS
Displays the shutter/EVS status. Nothing is displayed
if both the electronic shutter and EVS are set to OFF.
22(E)