Canon EOS Rebel XS Instruction Manual page 58

Using the Built=in Flash _s_/z_yz_z_
In indoors, low light, or backlit conditions, just pop-up the built-in flash
and press the shutter button to take flash pictures. In the <P> mode,
the shutter speed (1/60 sec. - 1/200 sec.} will be set automatically to
prevent camera shake
+_ Press the <€> button.
_ In Creative Zone modes, you can
press the <_ > button anytime to take
flash pictures.
_ While the flash is recycling, "_ buSY"
is displayed in the viewfinder, and
[BUSY{] is displayed on the LCD
monitor.
,, '_ Press the shutter button halfway.
In the bottom left of the viewfinder,
check that the <_> icon is lit.
Take the picture.
When focus is achieved and you
press the shutter button completely,
the flash will fire for the picture.
Effective Flash Range
IO0
2OO
400/Auto
800
1600
[Approx in meters / feet
18mr.
1=37/33-121
1 =53/33-174
1 =74/33-243
1 =105/33=344
1 =149/33=489
iiiiiiii_
1-23/33=75
1-33/33=108
1-46/33=151
1-66/33=217
1-93/33=305
58