Canon EOS-1D X Mark III Af Setting Manualbook page 125

How do you switch between the
exposure mode, drive mode, and
flash exposure compensation
while looking through the
viewfinder?
By pressing the
such as ISO speed, white balance, and
drive mode can be accessed, and each of
the settings can be changed.
It is possible to switch by cycling
through the shooting function settings.
Assign [Cycle between the set functions] to the
button with [Custom Controls]. By carrying out this
assignment, shooting function settings will switch between
ISO speed, exposure compensation, and white balance,
and each setting can be changed with dial operations.
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button, functions
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