Canon EOS 5Ds Instruction Manual page 310

a Shooting Time-lapse Movies
With time-lapse movie set to [Enable], you cannot set [z4: Movie rec.
size] and [53: Video system].
If the camera is connected to a computer or printer with the interface
cable, or if an HDMI cable is connected to the camera, you cannot select
[Enable].
The maximum ISO speed will be ISO 3200 in the <d>, <s>, <f>,
and <F> modes, and <a> mode with Auto ISO set.
Bulb exposure cannot be performed. If the shooting mode is <F>, the
operation will be the same as the <d> mode.
Movie Servo AF will not function.
If the shutter speed is 1/30 sec. or slower, the exposure of the movie
displayed may not reflect the exposure of the resulting movie.
Do not zoom the lens during time-lapse movie shooting. Zooming the
lens may cause the image to be out of focus, the exposure to change,
and the lens aberration correction not to function properly.
When shooting a time-lapse movie under a flickering light, noticeable
image flickering, horizontal stripes (noise), or irregular exposures may be
recorded.
The image displayed during time-lapse movie shooting and the resulting
movie may look different (in terms of flicker, depth of field, etc.).
If you move the camera from left to right (panning) or shoot a moving
subject while shooting a time-lapse movie, the image may look extremely
distorted.
During time-lapse movie shooting, auto power off will not operate. Also,
you cannot adjust the shooting function and menu function settings, or
play back images.
Sound and time code are not recorded for time-lapse movies.
Single shooting setting is applied to time-lapse movie shooting
regardless of the drive mode setting.
The shooting function settings for the first shot will be applied to
subsequent shots.
If a long exposure or shutter speed longer than the shooting interval is
set, the camera cannot shoot with the set interval. Also, shooting may
not be performed when the shutter speed and the shooting interval are
nearly the same.
If the next scheduled shot is not possible, it will be skipped. This may
make the time-lapse movie's recording time shorter.
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