Canon 1D X - Manual (Page 224)

224
k Shooting Movies
ISO speed in the d, s, f, and BULB modes
The ISO speed will be set automatically within ISO 100 - 25600.
Under [z2: ISO speed settings], if [ISO speed range]’s [Maximum]
setting (p.126) is set to [51200/H] in the d, s, and BULB modes, the
automatic ISO speed setting range’s Maximum will be expanded to H
(equivalent to ISO 51200). Note that even if you set [Maximum] to
[51200], the maximum will remain at ISO 25600 and will not be expanded.
If [z2: Highlight tone priority] is set to [Enable] (p.150), the ISO
speed will be ISO 200 - 25600.
Under [z2: ISO speed settings], [Auto ISO range] and [Min.
shutter spd.] cannot be set (p.127, 128) for movie shooting. Also,
[ISO speed range] cannot be set in the s mode.
Notes for Autoexposure, Shutter-priority AE, and Aperture-priority AE
During movie shooting in the d, s, f or BULB mode, this camera
supports the function that turns on the Speedlite’s LED light
automatically in low-light conditions. For details, refer to the
Speedlite’s instruction manual.
Using an EX-series Speedlite (Sold Separately) Equipped
with an LED Light
If [ISO speed range]’s [Minimum] is set to [L (50)] and you switch from still
photo shooting to movie shooting, the automatic ISO speed setting range’s
minimum for movie shooting will be ISO 100. It cannot be expanded to ISO 50.
You can lock the exposure (AE lock) by pressing the <A> button (p.177).
After applying AE lock during movie shooting, you can cancel it by pressing
the <S> button. (AE lock setting is retained until you press <S>.)
If you set the power switch to <1> and turn the <5> dial, you can set
the exposure compensation.
Pressing the shutter button halfway displays the ISO speed and shutter
speed at the screen bottom. This is the exposure setting for taking a still
photo (p.227). The exposure setting for movie shooting is not displayed.
Note that the exposure setting for movie shooting may differ from that for
still photo shooting.
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