The viewfinder of the A7SII has a little proximity sensor that shuts down your LCD screen as soon as you eye is looking through the viewfinder. This is a great help if you don't want your battery to drain on the LCD when you are not using it. But unfortunately the LCD will turn off when anything comes close to the sensor, even your hands when adjusting settings. When shooting video, this can be annoying. Luckily, this option can easily be switched off in your settings.
- Go to the settings tab in the settings menu (the second tab).
- Select 'FINDER/MONITOR' and change 'Auto' to 'Monitor(Manual)'