Canon EOS Rebel T5i 18-55mm IS STM Lens Kit - Manual (Page 199)

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3 Movie Menu Function Settings
[Wind filter]
When set to [Enable], it reduces wind noise when there is wind
outdoors. This feature takes effect only with the built-in
microphone.
Note that [Enable] will also reduce low bass sounds, so set this
function to [Disable] when there is no wind. It will record a more
natural sound than with [Enable].
[Attenuator]
Even if you set [Sound recording] to [Auto] or [Manual] and
shoot, sound distortion may still result if there is a very loud sound.
In such a case, setting it to [Enable] is recommended.
Video snapshot
You can shoot video snapshots. For details, see page 187.
In Basic Zone modes, the settings available for [Sound recording] will
be [On/Off]. If [On] is set, the sound-recording level will be adjusted
automatically (same as with [Auto]). However, the wind filter function will
not take effect.
The sound volume balance between L (left) and R (right) cannot be
adjusted.
Both L and R record audio at a 48 kHz/16-bit sampling rate.
COP
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