Canon EOS 5D Mark III Instruction Manual page 240

3 Menu Function Settings
Silent LV shootingN

This function applies to still photo shooting. For details, see page
206.
Metering timerN

You can change how long the exposure setting is displayed (AE lock
time).
[z5] Menu
Time code

You can set the time code. For details, see pages 237 and 238.
Silent Control

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 236.
Movie shooting button

When [V/
also press the shutter button completely or use Remote Switch RS-
80N3 (sold separately) or Timer Remote Controller TC-80N3 (sold
separately) to start/stop the movie shooting (p.185). However, when
[V/ ] is set, still photo shooting is not possible (p.228).
240
] is set, besides pressing the <0> button, you can