Canon EOS-1D X Instruction Manual page 354

85: Custom Controls
: Record func+card/folder selection
Press <0> to display the [Record func+card/folder sel.] screen
(p.120) on the LCD monitor.
: 14fps super high speed
In the <o> drive mode, while you hold down the <p> or <A>
button and press the shutter button completely, you can switch to super
high speed continuous shooting (max. approx. 14 fps).
: Picture Style
Press <0> to display the Picture Style selection setting screen (p.135)
on the LCD monitor.
: White balance selection
You can press <0> to change the white balance. Set while looking at
the top LCD panel or LCD monitor.
: Depth-of-field preview
When you press the depth-of-field preview button or the Multi-function 2
button, the aperture will stop down and you can check the depth of field
(p.176).
: IS start
With the lens' IS switch set to <1>, the lens' Image Stabilizer
operates when you press the button assigned to this function.
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