Canon EOS 1D Software Instruction Manual page 195

Enables quiet operation when the shutter button is OFF after
picture-taking
When single-frame shooting is selected, this function selects quiet camera operation when
you release the shutter button from the fully pressed position to the half way position.
This is useful when the camera operation noise would be disturbing after you take the
picture.
If you select continuous shooting, the camera operates normally.
Setting mirror lockup with C.Fn-12 will further reduce the shooting noise.
Changes the timer's time length
After you press and release a button, the respective function remains active for a specific
number of seconds. You can change this number of seconds as necessary.
The function's activation time can be set from 0 to 3600 sec. (1 hour).
If the standard activation time is too short or too long, you can adjust it.
6 sec. Timer After you press the shutter button halfway or the <
16 sec. Timer FE lock time after you press the <
Exposure setting retaining time after the picture is taken. Setting
Post-shutter
this to a longer time can make it easier to shoot with AE lock.
release timer
LCD panel illumination time after the picture is taken.
Be aware that a longer activation time will consume more battery power. The battery life
will become shorter and fewer number of shots can be taken with the battery.
To turn off the function's activation time midway, press the <
button or < > button.
Personal Function Settings
> button.
> button.
> button, < >
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