Canon EOS REBEL XS Instruction Manual page 74

External Speedlites
Canon $peedJites other than the EX=series
® With an EZIEIEGIMLITLoseries SpeedHte set in the TTL or AoTTL
autoflash mode, the flash can be fired at full output onJyo Set the
camera's shooting mode to <M> (manual exposure) or <Av>
(aperture=priority AE) and shoot.
® When using a Speedlite which has manual flash mode, shoot in the
manual flash mode.
® With an EX=series Speediite set to TTL autoflash with the flash's
Custom Function, the flash will fire at full output only.
Using Non'Canon Flash Units
Syne Speed
The camera can synchronize with compact, non=Canon flash units at
11200 sec. or slower. Be sure to test the flash unit beforehand to make
sure it synchronizes properly with the camera=
Cautions for Live View shooting
A non=Canon flash wiii not fire during Live View shooting=
anothe[ camera brand, the camer a may not operate properJy and
malfunction may result,
@ Do not attach a high-voltage flash unit on the camera's hot shoe. Utmight
not work.
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