Canon EOS-1D C Instruction Manual page 334

3 Custom Function Settings
If you try to use one of the locked camera controls when the power
switch is set to <R>, <3> will be displayed in the viewfinder and
on the top LCD panel, and <LOCK> will appear on the shooting settings
display (p.50).
By default, when the power switch is set to <R>, the <5> dial will
be locked.
Even if the <5> dial has a checkmark <X> appended and is locked,
you can still use the touch pad <h>.
Custom Controls
You can assign often-used functions to camera buttons or dials according
to your preferences. For details, see page 337.
J/K button function
You can change the function of the <J/K> button. During image playback,
you can protect images, record a voice memo, and rate images.
J/K Protect (Hold: Record memo)
To protect an image, press the <J/K> button. To start recording a voice
memo, hold down the <J/K> button for 2 sec. To end the recording, let
go of the button.
K Record memo (J disabled)
Pressing the <J/K> button starts recording a voice memo immediately,
and letting go of the button ends the recording. To protect an image, use
[x1: Protect images].
7/K Play memo (Hold: Record memo)
When you playback an image having a voice memo, press the <J/K>
button to playback the voice memo. To start recording a voice memo,
hold down the <J/K> button for 2 sec. To end the recording, let go of
the button. To protect an image, use [x1: Protect images].
9Rating (J and K disabled)
To rate an image, press the <J/K> button. Each time you press the
button, the rating will change as follows: OFF, l, m, n, o, p.
If [Rating (J and K disabled)] is selected and you press the <Q>
button, you can set the ratings selectable with the <J/K> button.
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