Canon 550D - Manual (Page 133)

133
Shooting Function Settings
kShutter/AE lock button
You can change the function assigned to the AE lock button and to
when you press the shutter button halfway.
• AF/AE lock:
Normal function. Press the shutter button halfway to execute AF.
Press the button for AE lock.
• AE lock/AF:
Press the shutter button halfway for AE lock. For AF, press the
button. Convenient when you want to focus and meter at
different parts of the picture.
• AF/AF lock, no AE lock:
Press the shutter button halfway to execute AF. While holding
down the button, press the shutter button to take a still photo
without executing AF. Convenient when you do not want to
autofocus when taking a still photo during movie shooting. AE lock
is not possible.
• AE/AF, no AE lock:
Press the shutter button halfway for metering. For AF, press the
button. AE lock is not possible.
Remote control shooting
You can use the Remote Controller RC-6 (sold separately, p.204) to
start and stop the movie shooting. Set the shooting timing switch to
<2>, then press the transmit button. If the switch is set to
(immediate shooting), still photo shooting will take effect.
The AF mode setting will also be reflected in Live View shooting.