Canon Speedlite 580EX II Instruction Manual page 17

FEL:
FE
Lock
FE (flash exposure) lock locks the correct flash exposure setting for an)
part of the scene.
With
<ETTL>
displayed on the LCD panel, you press the camera's
<FEL>
button. If the camera does not have the
<FEL>
button, press thc
<St>
button.
1
Focus the subject.
2
Press the
GEL>
button. (616)
a Aim the subject at the center of the
viewfinder and press the
<FEL>
button.
The Speedlite will fire a preflash and
the required flash output for the
subject is retained in memory.
b "FEL" will be displayed in the
viewfinder for 0.5 sec.
Each time you press the
<FEL>
button, a preflash will
be
fired and a
new flash exposure setting will be
locked.
@
.
I?
thesubJ@ is too far away and underexposure will result, the < ! p icon
will
bllnkin the viewfinder. Move closer to the subject and
try
the
FE
lock
agarn.
If
cETTL>
is not displayed on the
LCD
panel,
FE
lock cannot be set.
If the subject
is
too small,
FE lock
might
not
be very effective.