Canon 814XL-S - Manual (Page 127)

mmimi sound recording
Manual sound recording is used when you want
to make the input level of the sound track more
even. If the level of sound is fairly low, but oc­
casional loud sounds come rushing in, the input
level would change too radically to be handled by
the ALC, rendering natural recording impossible.
Manual sound recording can also be used to pur­
posely distort sounds to create special effects.
In the manual recording mode, the sound volume
is regulated by the volume control knob, turned
clockwise to increase the recorded sound level,
and can be monitored by looking at the volume
level scale of the level meter. The meter needle
usually rests in the left half of the scale, and
slides to the right as the sound level increases. If
the needle should enter the red during your
manual sound recording, the sound will be
distorted.