Canon EOS 30D Instruction Manual page 105

A FE LockN
FE (flash exposure) lock obtains and locks the correct flash exposure
reading for any part of a subject.
If the subject is too far away and beyond the effective range of the flash, the
<D> icon will blink. Get closer to the subject and repeat steps 2 to 4.
Check that the <D> icon is lit.
1
Press the <D> button to pop-up the
built-in flash.
Press the shutter button halfway and look in
the viewfinder to check that the <D> icon is lit.
Focus the subject.
2
Press the shutter button halfway. Keep
pressing the shutter button halfway until step 4.
Press the <A> button.
3
Aim the viewfinder center over the
subject where you want to lock the flash
exposure, then press the <A> button.
The flash will fire a preflash and the
required flash output is calculated
and retained in memory.
In the viewfinder, "FEL" is displayed
for a moment and <d> will light.
Each time you press the <A> button, a
preflash is fired and the required flash output
is calculated and retained in memory.
Take the picture.
4
Compose the shot and press the
shutter button completely.
The flash is fired to take the picture.
Using the Built-in Flash
(8)
105