Canon EOS Rebel XTI - Manual (Page 51)

51
3
Advanced Shooting
Techniques
In the Basic Zone modes, most functions are set
automatically and cannot be changed to prevent spoiled
shots. In the <d> (Program AE) mode, you can set
various functions and be more creative.
In the <d> (Program AE) mode, the camera sets the
shutter speed and aperture automatically to obtain the
standard exposure.
The difference between the Basic Zone modes and <d> is
explained on page 158.
* <d> stands for Program.
* AE stands for Auto Exposure.