the answer is in your manual...
here's some spoonfeeding:
1) turn on cam
2) press menu button
3) press right 9 times, or look for the big C with the number 1
4) look for number 3 on that page, it's called EXPANDED SENSITIVITY
5) set it to 2, or ON
you're welcome, and next time, play with your camera more. or read the manual.