Sony MSW-900 Operation Manual page 40

w; TURBO GAIN button
When shooting under extremely poor lighting conditions, slide the cover
of this button to the left and press the button once to boost the video gain
2
to the value preset on the GAIN SW page of the USER menu (up to
48 dB). To stop boosting the gain, press the button once more.
wa ws wd wf
Shooting and recording/playback functions (3)
2-24
Chapter 2 Locations and Functions of Parts and Controls