51XF Camera System Manual |
AF-Lock
When the camera is set to either the Single shot or Continuous AF Drive
mode, the focus position can be locked, which is useful for o-center subjects.
The AF-Lock function is not assigned to a control button by default. To re-
configure the Front or Rear User button, or assign the feature to the
secondary shutter release button, press the Rear Key and select UI Setup >
Control Setup > Rear / Front / 2nd Shut > AF Lock.
1. Focus on the subject using the Single shot or Continuous AF Drive mode.
2. Press and hold the assigned button to lock the focus.
3. Recompose the subject in the viewfinder.
Manual Focus (MF)
Manual focus is achieved by switching the AF/MF selector ring on the lens
from AF to MF. Note autofocus cannot be performed if the lens is set to MF.
The point of focus can be determined by the AF Area mode using the focus
indicators in the viewfinder display, or by eye using the focusing screen.
NOTE:
The AF/MF selector ring on the lens can help you to rapidly switch between AF
(Autofocus) and M (Manual) using your left hand, without having to remove your finger
from the shutter release button.
NOTE:
You will achieve higher focus accuracy for o-center subjects by using the dedicated
focus recompose feature called AF+, which is described in a later section.
Assigning AF Lock
AF/MF selector ring
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