Before image.
If your picture is too dark then this can be altered. To do this go into Image on the main menu. Then select adjustments. You can then either choose to use brightness/contrast or levels. I have chosen to use levels as this is the best way.
Once selected it will bring up the levels box on the screen. Within this is a graph.
Below the graph are three pointers. Moving these will adjust the brightness of your image.
Once you have altered these to to your desired brightness press ok in the levels box. The levels box will then close and you can save your picture.