OM SYSTEM Tough TG-7 Digital Camera (Red) - Manual (Page 42)

If the subject is too dark or too bright
If the camera is unable to achieve optimal exposure, the shutter-speed display will flash as shown.
Display Problem/solution
Slow shutter speed
F5.6 1"
The problem is caused by underexposure.
Choose a lower aperture value.
Fast shutter speed
2000 F5.6
The problem is caused by overexposure.
Choose a higher aperture value.
If ISO sensitivity is not set to [AUTO], optimal exposure may be achieved by changing the setting.
g Changing ISO sensitivity (ISO Sensitivity) (P.74)
42
Choosing aperture (
A
: Aperture-Priority AE)
B