Sony TAV-L1 - Manual (Page 46)

46 US
Light Sensor Selects [On] to enable the
automatic brightness control.
The light sensor measures the
room brightness which allows
the system to automatically
adjust the picture brightness
based on the picture settings
and the ambient room light
conditions.
Tip
In low light ambient the range of
the backlight control is reduced
when the light sensor is set to
[On].
Note
Be sure not to put anything
around the sensor, as its
function may be affected.
See page 16 on the sensor.
Option Description