Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 324)

3 Setting the Sound Recording
324
Using headphones
By connecting headphones (commercially-available) equipped with
a 3.5 mm diameter mini plug to the camera’s headphone terminal
(p.28), you can listen to the sound during movie shooting. If you are
using an external stereo microphone, you can listen to the sound in
stereo. To adjust the headphones’ sound volume, press the <
Q >
button and select < n >. Then turn < 5 > to adjust (p.310).
You can also use headphones during movie playback.
When connecting an external microphone or headphones to the camera, be
sure to insert the plug all the way in.
The camera’s built-in microphone will also record the operation sound
during shooting and mechanical sound of the camera. These sounds in
the movie may be reduced by using the Directional Stereo Microphone
DM-E1 (sold separately).
Line IN can handle sound input of up to +6 dBV. However, if the sound
input exceeds the standard input level of -8 dBV, the distortion may
increase. Taking test shots beforehand is recommended.
For Line input, be sure that [ Sound rec. ] is set to [ Line input ]. If [ Line
input ] is not set and the sound is input, it may cause a malfunction.
When [ Line input ] is set, the built-in microphone for movie shooting will
not record the sound. Also, [ Wind filter ] and [ Attenuator ] cannot be set
(do not work).
When using headphones for audio, noise reduction will not be applied to
the headphone output. Because of this, what you hear will differ from the
actual audio recorded with the movie.
When listening to the sound with headphones, do not change the
[
Manual ] and [ Line input ] settings. Doing so may cause a sudden
increase in the sound level and hurt your ears.
When the camera is connected to a TV set with an HDMI cable, the sound
will also be output (except when [
Sound rec.: Disable ] is set). If there is
audio feedback when the sound is output from the TV set, place the
camera farther away from the TV set or turn down the TV sound volume.
The sound volume balance between L (left) and R (right) cannot be adjusted.
Audio is recorded at a 48 kHz/16-bit sampling rate.
If [ z 5: Silent Control ] is set to [ Enable h ] (p.325), you can adjust the
sound-recording level with the < h > touch pad with less operation sound
during movie shooting.