Bracketting
I set up a little test still life to check out the bracketing on my camera (Nikon Coolpix 3100). The Coolpix does not have an automatic bracket setting; one must dig into the menu, and add or subtract from the exposure. The f-stops are in 1/3 increments, with a total of 2.0 in either direction. I can see this working well in a static setting where you can take the time to make the adjustments and capture another shot, but out in the world it would be harder. I guess it comes down to experience and knowing the camera well, to have a better guess at which way and how far to go with the bracketting. After all, the whole reason to bracket is to increase your chances of capturing the image the way you want to.
expossure set by camera
-.3
-1
-2
+.3
+1
+2
expossure set by camera
-.3
-1
-2
+.3
+1
+2