Changing the AF Frame Mode
You can change the AF (Auto Focus) frame mode to match the scene you want to shoot.
Choose [AF Frame].
zPress the nbutton to choose [AF Frame] in the 4 tab, then press the qr buttons to choose an option.
FlexiZone/Center
A single AF frame will be used. This is effective for focusing on a specific point. In [FlexiZone], you can change the position and size of the AF frame (p. 88).
If the camera cannot focus when you press the shutter button halfway, the
AF frame will turn yellow and 
will appear.
Changing the Composition with the Focus Lock
While you keep the shutter button pressed halfway, the focus and exposure are locked. You can now recompose and shoot. This is called Focus Lock.
Focus.
zCenter the subject you want in focus, and press the shutter button halfway.
zConfirm that the AF frame on the subject is green.
Recompose.
zKeep the shutter button pressed halfway and move the camera to recompose the scene.
Shoot.
zPress the shutter button fully.
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