Canon EOS Rebel XS Instruction Manual page 16

Shooting*
About the Information D_splay
Each time you press the <DISR> button, the information display will
change
Image-recording quality
simulation
(gdghtness/RGB)
frame
....... Battery check
Shut_r_
Aperture
_g
Flash exposure compensation
Exposure level
_ When <_ > is displayed in white, it indicates that the Live Vie w image
brightness is close to what the captured image will look like.
® _f <_ > is blinking, it indicates that the Live View image is not being
displayed at the suitable brightness due to _ow or bright light conditions.
However, the captured iraage will reflect the exposure setting.
!f flash is used or bulb is set, the <_ > icon and histogram will be
grayed out. The histogram might not be properly displayed in low light or
bright light conditions.
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