Panasonic C-D3100ZM-S - Troubleshooting guide; Subject out of focus; Flash pictures are too dark; Batteries run out quickly

du Troubleshooting guide
Problem
Subject out of focus
Flash pictures are too dark
Batteries run out quickly
38
Solution
If the subject is not in the center
of the viewfinder, use the focus
lock.
See “Focus lock".
Subjects must be 0.8 m or more
away from the camera.
Make sure your fingers are clear
of the flash.
Check that the subject is within
flash range. See "Auto flash
mode”
Has the camera been left with
the back cover open?