Here’s a couple of interesting digital camera hacks. The first one, an explanation of how the camera histogram works, is something I kept meaning to learn about for a while now!
What you want to be leery of is when the graph information bunches up on one side or another. A graph heavy to the left usually indicates underexposure with the image appearing dark (move exposure compensation to +1). If everything is scooted over to the right, that often indicates overexposure with blown highlights and washed out shadows and midtones (move exposure compensation to -1).
Later… There’s another 10 hacks on the book sample page!