7: Fe Lock - Canon SPEEDLITE 580EXII Mode D'emploi

7: FE Lock

FE (flash exposure) lock locks the correct flash exposure setting for any
part of the scene.
With <a> displayed on the LCD panel, you press the camera's
<7> button. If the camera does not have the <7> button, press the
<P> button.
If the subject is too far away and underexposure will result, the <Q> icon
will blink in the viewfinder. Move closer to the subject and try the FE lock
again.
If <a> 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.
16
Focus the subject.
1
Press the <7> button.
2
Aim the subject at the center of the
viewfinder and press the <7>
button.
The Speedlite will fire a preflash and
the required flash output for the
subject is retained in memory.
"FEL" will be displayed in the
viewfinder for 0.5 sec.
Each time you press the <7>
button, a preflash will be fired and a
new flash exposure setting will be
locked.
(3)