Pentax K-x Operating Manual page 122

120
4
Lock the focus.
Keep the shutter release button pressed halfway. The focus will remain
locked.
5
Recompose the picture while
keeping the shutter release
button pressed halfway.
4
• The focus is locked while the focus indicator ] is displayed.
• Turning the zoom ring with the focus locked may cause the subject to be out
of focus.
• The beep that sounds when the image is focused can be turned off. (p.243)
• You cannot set the focus lock when [AF Mode] is set to k (Continuous
mode), the Picture mode is set to \ (Moving Object) or H (Scene) mode
is set to n (Stage Lighting), R (Kids), Y (Pet) or l (Night Snap). In such
cases, the autofocus continues to focus on the subject until the shutter is
released (Continuous Autofocus).
Locking Exposure when the Focus is Locked
Set [5. AE-L with AF Locked] in the
[A Custom Setting 1] menu (p.81) to lock the
exposure value while the focus is locked. By
default, the exposure is not locked when the
focus is locked.
Off
1
On
2
Exposure is not locked when the focus is locked. (default setting)
Exposure is locked when the focus is locked.
5. AE-L with AF Locked
1 Off
2 On
AE is locked
when the focus
is locked
MENU
Cancel OK OK