Canon EOS REBEL T4I Instruction Manual page 57

Basic Shooting and
image Playback
This chapter explains how to use the Basic Zone modes
on the Mode Dial for best results and how to play back
images.
With Basic Zone modes, all you do is point and shoot wNe the
camera sets everything automatically (p.75,310). Also, to
prevent botched pictures due to mistaken operations, the main
shooting settings cannot be changed.
Abo.t t .eA.toug.t_.g O "t_mizer
!n Basic Zone modes, the Auto Lighting Optimizer (p. ! 23) wi!l
adjust the image automatically to obtain the optimum brightness
and contrasL It is a!so enabled by default in Creative Zene modes.