My olympus e520 digital photos keep appear dark. what settings do i change to ha

[f101rey]

my olympus e520 digital photos keep appearing dark. what settings do i change to have photos come out with more light as i had before?

 

[kenrivers]

Look at page 31 of the manual http://www.olympus.co.jp/en/support/imsg/digicamera/download/manual/esystem/man_e520_e.pdf