Sony ILCA-77M2 - Manual (Page 28)

Image quality
Remaining battery
Number of recordable images*
*
Even if the number of recordable images is higher than 9,999 images, "9999" will appear on the
display panel.
To turn on the display panel backlight
Press the illumination button (A) on top of the camera. If you press the button again, the display panel
backlight will turn off.