Canon EOS 5DS Instruction Manual page 316

3 Menu Function Settings
Metering timerN
You can change how long the exposure setting is displayed (AE lock
time).
Time code
You can set the time code. For details, see pages 303-305.
Silent ControlN
When [Enable h] is set, you can use the touch pad <h> and
Quick Control screen to change settings silently during movie
shooting. For details, see page 302.
V button functionN
You can set the functions performed by pressing the shutter button
halfway or completely during movie shooting.
Setting
/z
q/z
/k
q/k
If [ /k] or [q/k] is set, besides pressing the <0> button,
you can start/stop the movie shooting by pressing the shutter button
completely or by using Remote Switch RS-80N3 or Timer Remote
Controller TC-80N3 (both sold separately, p.237). However, with
[ /k] or [q/k] set, still photo shooting (p.293) is not possible.
During movie shooting, the [V button function] setting overrides any
function assigned to the shutter button with [83: Custom Controls].
316
Pressed Halfway
Metering and AF
Metering only
Metering and AF
Metering only
Pressed Completely
Still photo shooting
Still photo shooting
Starts/stops movie shooting
Starts/stops movie shooting