Mf: Manual Focusing - Canon EOS-1D X Instruction Manual

When Autofocus Fails

MF: Manual Focusing

Focusing ring
If you press the shutter button halfway while focusing manually, the focus
confirmation light <o> will light up when focus is achieved.
With 61-point automatic selection, when the center AF point achieves
focus, the focus confirmation light <o> will light up.
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Set the lens focus mode switch to
1
<MF>.
Focus the subject.
2
Focus by turning the lens focusing
ring until the subject looks sharp in
the viewfinder.