Canon EOS Rebel XS Instruction Manual page 52

_] Disabling FJash _zyss_m;_z_m_
In places where flash photography is prohibited_ use the <_> (Flash
Off) mode. This mode is also effective for candlelight scenes when you
want to obtain the candlelight effect.
,_ Shooting Tips
if the numeric display in the vBewfinder blinks, take care to
prevent camera shake,
Under low light when camera shake is prone to occur, the
viewfinder's shutter speed display will blink. Hold the camera steady
or use a tripod. When using a zoom lens, use the wide-angle end to
reduce blur caused by camera shake
Taking portraits without fRash.
Under low light, the person must not move untl the picture is taken
If the person moves during the exposure, he or she might look
blurred in the picture
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