Canon EOS 90D Advanced User's Manual page 308

Recording Time-lapse Movies
If the card does not have enough free space to record the set number of shots,
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[Playback time] will be displayed in red. Although the camera can continue
shooting, the shooting will stop when the card becomes full.
If the movie fi le size exceeds 4 GB with the [No. of shots] settings and the
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card is not formatted in exFAT ( = 512), [Playback time] will be displayed
in red. If you keep shooting in this condition and the movie fi le size reaches 4
GB, the time-lapse movie recording will stop.
Do not point the camera toward an intense light source, such as the sun or an
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intense artifi cial light source. Doing so may damage the image sensor or the
camera's internal components.
[Time-lapse movie] cannot be set to an option other than [Disable] when the
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camera is connected to a computer with the interface cable, or when an HDMI
cable is connected.
Movie Servo AF will not function.
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If the shutter speed is 1/30 sec. or slower, the exposure of the movie may not
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be displayed properly (may diff er from that of the resulting movie).
Do not zoom the lens during time-lapse movie recording. Zooming the lens
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may cause the image to be out of focus, the exposure to change, or the lens
aberration correction not to function properly.
When recording a time-lapse movie under a fl ickering light, noticeable image
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fl ickering, horizontal stripes (noise), or irregular exposures may be recorded.
Images that are displayed while time-lapse movies are being recorded
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may look diff erent from the resulting movie. (For example, there may be
inconsistent brightness from fl ickering light sources, or noise from a high ISO
speed.)
When recording a time-lapse movie under low light, the image displayed
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during shooting may look diff erent from what is actually recorded in the movie.
In such cases, the [ g ] icon will blink.
If you move the camera from left to right (panning) or shoot a moving subject
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during time-lapse movie recording, the image may look extremely distorted.
During time-lapse movie recording, auto power off will not take eff ect. Also,
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you cannot adjust the shooting function and menu function settings, play back
images, etc.
Sound is not recorded for time-lapse movies.
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With time-lapse movie recording, you can press the shutter button completely
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to start or stop the movie recording regardless of the [ 5 : Shutter btn
function for movies] setting.
With [Interval] set to less than 3 sec. and [Auto exposure] set to [Each
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frame], if the brightness diff ers greatly from the preceding shot, the camera
may not shoot at the set interval.
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