Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 480)

480
When you press the < B > button with
the camera being ready to shoot, you
can switch the display as follows:
Displays camera settings (p.481),
Electronic level (p.82), Quick Control
screen (p.482), and Custom Quick
Control screen (p.463).
[ z button display options ] under
[ 5 2 ] tab enables you to select the
options displayed when the < B >
button is pressed.
Select the desired display option and
press <
0 > to add a checkmark [ X ].
Then select [ OK ] to register the
setting.
B
Button Functions
Camera settings
Electronic level
Quick Control screen
Custom Quick
Control screen