There are times when too much automation is a bad thing. Exposure modes are a great example. They make all the decisions for you, but they take away your creative control in the process.
Automatic Exposure Modes
Two types of automatic exposure modes are available. The first are fully automatic modes where the camera makes all the decisions for you. These are aimed at beginners and are not much use for anybody who likes to make creative decisions for themselves.
The other type of automatic mode is where you set ISO and either aperture or shutter speed yourself, and the camera calculates the remaining setting using its built-in ...