Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 131)

131
3 Customizing AF Functions
You can limit the selectable AF area selection modes to suit your
shooting preferences. Select the desired selection mode and press
<
0 > to add a checkmark [ X ]. Then select [ OK ] to register the setting.
The AF area selection modes are explained on pages 96-98.
: Manual select.:Spot AF
: Manual selection:1 pt AF
: Expand AF area:
: Expand AF area:Surround
: Manual select.:Zone AF
: Manual select.:Large Zone
AF
: Auto selection AF
Select AF area selection mode
The [ X ] mark cannot be removed from [ Manual selection:1 pt AF ].
If the attached lens belongs to group I, J or K, you cannot use certain AF
area selection modes even if you add a [
X ] in [ Select AF area selec.
mode ] (p.106 - 108).