Aperture-Priority Ae - Canon EOS-1DX Instruction Manual

Aperture-priority AE

When the shooting mode is <f>, you can manually set the aperture
for movie shooting. The ISO speed and shutter speed will be set
automatically to suit the brightness and obtain a standard exposure.
Aperture
Changing the aperture during movie shooting is not recommended since
variations in the exposure, due to the drive of the lens aperture, will be
recorded.
1
Set the shooting mode to <f>.
Press the <W> button and turn
the <6> or <5> dial to select
<f>.
2
Set the desired aperture.
While looking at the LCD monitor,
turn the <6> dial.
3
Focus and shoot the movie.
The procedure is the same as steps 2
and 3 for "Autoexposure Shooting"
(p.227).
k Shooting Movies
229