Canon EOS 1DS MARK II 9443A009 Instruction Manual (en)

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95
AE lock enables you to lock the exposure at a different place from the 
point of focus. After locking the exposure, you can recompose the shot 
while maintaining the desired exposure level. This feature is useful for 
backlit and spotlighted subjects.
1
Focus the subject. 
2
Press the <
w
> button. 
(
9
)
¡
Aim the viewfinder center over the 
subject where you want to lock the 
exposure, then press the <
A
> button. 
s
The <
w
> icon will light in the 
viewfinder and the exposure setting 
will be locked (AE lock). 
¡
Each time you press the <
A
> button, 
it locks the current exposure setting. 
3
Recompose and take the picture. 
¡
The exposure level indicator will show 
the AE lock exposure level and the 
current exposure level in real-time. 
¡
If you want to maintain the AE lock 
while taking more shots, hold down 
the <
A
> button and press the shutter 
button to take another shot. 
A
A
A
A
AE Lock
Partial or spot metering is recommended for AE lock over a specific point.  
(p.80)